The Push Notifications Console now includes metrics for notifications sent in production through the Apple Push Notification service (APNs). With the console’s intuitive interface, you’ll get an aggregated view of delivery statuses and insights into various statistics for notifications, including a detailed breakdown based on push type and priority. Introduced at WWDC23, the Push Notifications Console makes it easy to send test notifications to Apple devices through APNs. Learn more.

App getting terminated as the app enters background state. No crash logs are generated. I have collected this log from Console(Mac app)by connecting iPhone and sending my app to background. There is no meaningful reason or code I can get from the logs. Can you please help me with what does 'explanation:BG Kill Demo ' means ? My app is a VoIP app. App depends on voip apns notifications to receive information about new Voip calls from server. I am posting the logs collected from console app here. default 14:29:55.265590-0400 audiomxd -CMSessionMgr- CMSessionMgrHandleApplicationStateChange: Sending stop command to com.myapp.bundleid with pid '2933' because client is background suspended and there is no AirPlay video session for it default 14:29:55.265753-0400 dasd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.265908-0400 locationd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.265994-0400 locationd {"msg":"invoking applicationStateChange handler", "StateChangeData":"{\n BKSApplicationStateAppIsFrontmost = 0;\n BKSApplicationStateExtensionKey = 0;\n SBApplicationStateDisplayIDKey = "com.myapp.bundleid";\n SBApplicationStateKey = 2;\n SBApplicationStateProcessIDKey = 2933;\n SBMostElevatedStateForProcessID = 2;\n}"} default 14:29:55.266083-0400 locationd {"msg":"Post Application State Change Notification", "notification":"BackgroundTaskSuspended", "pid":2933, "bundleId":"com.myapp.bundleid"} default 14:29:55.267019-0400 locationd {"msg":"#CLIUA AppMonitor notification", "notification":"BackgroundTaskSuspended", "pid":2933, "bundleId":"com.myapp.bundleid", "ClientKey":"icom.myapp.bundleid:"} default 14:29:55.267061-0400 locationd {"msg":"skip erasing #CLIUA for RunningBoard Process State. Does not exists", "bundleId":"com.myapp.bundleid"} default 14:29:55.267678-0400 watchdogd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.267765-0400 useractivityd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.267934-0400 symptomsd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.267982-0400 wifid Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.268228-0400 UserEventAgent Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.268275-0400 callservicesd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.268338-0400 WirelessRadioManagerd Received state update for 2933 (app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>, running-suspended-NotVisible default 14:29:55.269217-0400 runningboardd Acquiring assertion targeting [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] from originator [osservice<com.apple.dasd>:76] with description <RBSAssertionDescriptor| "DAS: Application is docked." ID:33-76-44901 target:2933 attributes:[ <RBSDomainAttribute| domain:"com.apple.dasd" name:"DockApp" sourceEnvironment:"(null)"> ]> default 14:29:55.269572-0400 runningboardd Assertion 33-76-44901 (target:[app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933]) will be created as active default 14:29:55.270431-0400 runningboardd [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Set jetsam priority to 30 [0] flag[1] default 14:29:55.270658-0400 runningboardd Calculated state for app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>: running-suspended (role: None) (endowments: (null)) default 14:29:55.273005-0400 runningboardd Received termination request from [osservice<com.apple.dasd>:76] on <RBSProcessPredicate <RBSProcessHandlePredicateImpl| app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933>> with context <RBSTerminateContext| explanation:BG Kill Demo reportType:None maxTerminationResistance:Interactive> default 14:29:55.274715-0400 runningboardd Executing termination request for: <RBSProcessPredicate <RBSProcessHandlePredicateImpl| app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933>> default 14:29:55.275034-0400 runningboardd [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Terminating with context: <RBSTerminateContext| explanation:BG Kill Demo reportType:None maxTerminationResistance:Interactive> default 14:29:55.275122-0400 runningboardd [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] terminate_with_reason() success default 14:29:55.275768-0400 SpringBoard [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Workspace connection invalidated. default 14:29:55.275790-0400 SpringBoard [app<com.myapp.bundleid(AD9F24FF-321B-48U6-895F-723CDA943372)>:2933] Now flagged as pending exit for reason: workspace client connection invalidated default 14:29:55.275815-0400 backboardd Connection removed: IOHIDEventSystemConnection uuid:C2525EA6-A052-480B-B83D-4BD62C29C6EC pid:2933 process:MyApp type:Passive entitlements:0x0 caller:BackBoardServices: + 280 attributes:{ HighFrequency = 1; bundleID = "com.myapp.bundleid"; pid = 2933; } state:0x1 events:9 mask:0x800 dropped:0 dropStatus:0 droppedMask:0x0 lastDroppedTime:NONE default 14:29:55.275988-0400 backboardd Removing client connection <BKHIDClientConnection: 0xd43cd1f40; IOHIDEventSystemConnectionRef: 0xd415d5800; vpid: 2933(v1C3E); taskPort: 0x84D8B; bundleID: com.myapp.bundleid> for client: IOHIDEventSystemConnection uuid:C2525EA6-A052-480B-B83D-4BD62C29C6EC pid:2933 process:MyApp type:Passive entitlements:0x0 caller:BackBoardServices: + 280 attributes:{ HighFrequency = 1; bundleID = "com.myapp.bundleid"; pid = 2933; } state:0x1 events:9 mask:0x800 dropped:0 dropStatus:0 droppedMask:0x0 lastDroppedTime:NONE source:HID default 14:29:55.288098-0400 runningboardd [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] termination reported by launchd (15, 0, 9) default 14:29:55.289192-0400 runningboardd Removing process: [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] default 14:29:55.289331-0400 runningboardd Removing launch job for: [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] default 14:29:55.289582-0400 runningboardd Removed job for [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933] default 14:29:55.289706-0400 runningboardd Removing assertions for terminated process: [app<com.myapp.bundleid(AD9F24F321B-48U6C7-895F-723CDA943372)>:2933]

I've implemented pass generation successfully and it's updated through Apple's silent notification, which updates the passes to their latest versions. I want to send some marketing push notifications to the Apple Wallet App as shown in my post at stackoverflow. Here is the Silent notification implementation, which is working perfectly fine. const options: apn.ProviderOptions = { token: { key: fs.readFileSync("./certs/APNs_AuthKey_7YYF346FU5.p8"), keyId: "******", teamId: "******", }, pfx: fs.readFileSync("./certs/private_key.pem"), cert: fs.readFileSync("./certs/certificate.pem"), production: true, rejectUnauthorized: true, }; const apnProvider = new apn.Provider(options); async function sendSilentPushNotification( deviceTokens: string[], serialNumber: string ) { try { const notification = new apn.Notification(); notification.topic = "pass.com.digital.passmaker"; notification.payload = { aps: { "content-available": 1, }, serialNumber, }; notification.priority = 5; return await apnProvider.send(notification, deviceTokens); } catch (error) { logger.error("Apple Notification error: " + error); return error; } } Here is the marketing notification I am trying to send, it is working with success, but I don't see any notification on mobile phone. please help me to fix it. async function sendCustomPushNotification( deviceTokens: string[], serialNumber: string, title: string, body: string, category?: string, badge?: number ) { try { const notification = new apn.Notification(); notification.topic = "pass.com.digital.passmaker"; // Set the title and body of the notification notification.alert = { title: title, subtitle: "Pass Update", body: body, }; // Set the sound to play when the notification is received notification.sound = "default"; // Set the badge number on the app icon (optional) if (badge !== undefined) { notification.badge = badge; } notification.contentAvailable = true; notification.mutableContent = true; notification.aps.category = category; notification.aps.alert = { title: title, body: body, }; notification.aps.badge = badge; notification.aps["content-available"] = 1; notification.aps["launch-image"] = "https://banner2.cleanpng.com/20180423/gkw/.......jpg"; // You can still include the serialNumber in the custom payload notification.payload = { serialNumber: serialNumber, aps: { "content-available": 1, "mutable-content": 1, "interruption-level": "time-sensitive", }, }; // Set to high priority notification.priority = 10; return await apnProvider.send(notification, deviceTokens); } catch (error) { logger.error("Apple Notification error: " + error); return error; } } I literally receive a success response from api returning the device pushToken with no errors. However, no notification show on my iPhone

Users of my app have reported that they are sometimes unable to receive Voice-over-IP (VoIP) push notifications when using a SIM. (There is no problem when using WiFi) VoIP push notifications were not received during the following period. Could you confirm diagnostic logs and could you please tell me why my app can't receive VoIP push? [diagnostic logs] https://drive.google.com/drive/folders/1gSAbr1Fy1SrjlmRXuAzoXqiaxnNbFhj8?usp=sharing [Problem period] 2024/06/17 05:34:59 - 2024/06/17 09:04:42 Number of times that the push server pushed and it received a normal APNs response: 31 Number of times that iPhone received pushes: 0 2024/06/17 23:05:03 - 2024/06/18 09:02:16 Number of times that the push server pushed and it received a normal APNs response: 192 Number of times that iPhone received pushes: 0 2024/06/15 00:35:56 - 2024/06/15 09:55:57 Number of times that the push server pushed and it received a normal APNs response: 138 Number of times that iPhone received pushes: 0

Hi, we noticed some issues with our app when it comes to receiving pushs sent when a device was offline. We know that only one push is stored if multiple are received while the device was offline but we got reports of multiple users that aren't receiving any pushs that were sent while they were offline. Reinstalling the App didn't help. We ruled out the third-party providers we used as my first thought was that there was some issues with setting the expiry but it also happens if directly sent over APNs. With a development build and the sandbox APNs I had no issue receiving one push after getting back online. But after reinstalling the production app no push after being offline. Example sent with the Push Notifications Console but I also tested it with curl directly: curl -v \ --header "authorization: bearer ${AUTHENTICATION_TOKEN}" \ --header "apns-topic: de.alarm-it-factory.ACC-App-Xamarin" \ --header "apns-push-type: alert" \ --header "apns-priority: 10" \ --header "apns-expiration: 1721379960" \ --data '{"aps":{"alert":{"title":"Test","body":"Expiry Test 4"}}}' \ --http2 https://api.push.apple.com:443/3/device/46F201D299F2B900CF3BF3096341116B9D5A69D103F2C0ACF18634823F73AB79 Sent: 15. Juli 2024, 16:00:42,361 MESZ Received: not received Topic: de.alarm-it-factory.ACC-App-Xamarin BundleID: de.alarm-it-factory.ACC-App-Xamarin Token: 46F201D299F2B900CF3BF3096341116B9D5A69D103F2C0ACF18634823F73AB79 apns-id: ec14fba2-efa5-4ace-9e22-3e4e5a64d630 I sent test messages before and after acivating airplane mode to make sure I have the correct token.

Hi all, I'm attempting to implement a notification service extension for my app, however I'm running into some troubles with triggering the extension. The service extension is successfully installed with the app, and is initialized when a notification is received (which ive confirmed by attaching a debugger to it), however the didReceive method is never called. In the debugger console, the following message is printed: Service extension base class recieved didReceiveNotificationRequest: . I can confirm that the all the payload requirements are met to trigger the extension, and I was able to create an extension that would trigger in a blank application (using the same payload). It's only this app that prints this message to the console, and does not trigger. The extension code is as follows (I've removed all of the intended functionality at this point to try and pinpoint the issue) class NotificationService: UNNotificationServiceExtension { var contentHandler: ((UNNotificationContent) -> Void)? var bestAttemptContent: UNMutableNotificationContent? override init() { self.contentHandler = nil self.bestAttemptContent = nil print("startup!") } func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) async { let logger = Logger(subsystem: "app.revolt.chat", category: "notificationservice") logger.info("Invoked notification extension") debugPrint(request) self.contentHandler = contentHandler bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent) guard let bestAttemptContent = bestAttemptContent else { print("content is null") return } bestAttemptContent.title = "beans" if request.content.categoryIdentifier != "ALERT_MESSAGE" { bestAttemptContent.subtitle = "not an alert message" contentHandler(bestAttemptContent) return } contentHandler(bestAttemptContent) } override func serviceExtensionTimeWillExpire() { // Called just before the extension will be terminated by the system. // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used. if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent { contentHandler(bestAttemptContent) } } }

For a few years now, I have submitted requests for com.apple.developer.usernotifications.filtering entitlement, but never got an approval/denial response from apple. even after contacting them via email, still didn't get a response about the request status. our app is an emergency alerts app, this entitlement is crucial for our app reliability. Last request i have sent has Case-ID: 7377207

Hi, We've implemented the new Live Activity Broadcast push notifications (https://developer.apple.com/documentation/usernotifications/setting-up-broadcast-push-notifications) and are testing this out in sandbox/development. Looking at our logs I can see that we tried to send 54 broadcast notifications the last hour. 16 of these failed with "429 Too Many Requests". We probably have no devices registered on any of the channels at the moment. These are all channels from the "Development" environment. Any pointers to what could be wrong? Regards, -Tommy

We are experiencing issues with Push Notification delivery for our Lulu Money application (com.lulu.luluone) using Apple ID 1163514668. Upon reviewing the Push Notifications console, we have found that out of the 7.294M Priority Notifications sent in the last 4 weeks, only 1.226M were delivered to the device. The majority of the undelivered notifications, totalling 5.479M, are categorized as "Stored - Device Offline." This issue is negatively impacting our customers, and we need assistance in resolving it to ensure smooth notification delivery.

hi, I am trying to schedule a UNNotificationRequest at a certain date using UNCalendarNotificationTrigger, and I also want to update the badge count accordingly. However the badge property in UNNotificationContent can only be set when adding UNNotificationRequest, not when the trigger is fired or notification is actually delivered. How can I set up-to-date badge count if notification is scheduled in the future? For example, if I scheduled notification A to 3 hours later with badge count 1, and in between I got notification B, badge count should be 2 when A is delivered but it will be 1. I am aware of didPresent delegate which can be used when app is in foreground when notification is delivered, but is there any delegate that is called when UNNotificationRequest is delivered and app is backgrounded or we are using NSE? Thanks.

Hi everyoneI I’m maintining an app that uses the Notification Service Extension entitlement (which I have never used before). The app is not published on the App Store but is delivered OTA via a website. previous developer told me that to avoid certificate expiration issues, they started using the APNs Auth Key on the server in the past. However, I now have two certificates close to expiration on the developer profile page. Both certificates are of the type "Apple Push Services": The first one is named with my app's bundle ID (MyInstitution.AppName). The second is named after the Notification Service Extension entitlement (MyInstitution.AppName.NotificationServiceExtension). In the Key section on the developer profile page, under Certificates, Identifiers &amp; Profiles -&gt; Keys section, there is a key named "MyInstitution NSE." My questions are: What should I do with the expiring certificates now that the app is using the APNs Auth Key? Is the Notification Service Extension entitlement working separately from the APNs Auth Key? In the end, does something really need to be renewed? What needs to be renewed, and how? When should I perform this operation if needed? Do I need to create a new .ipa file and distribute it? I have added some screenshots to be clearer (names hidden for privacy concerns):

PLATFORM AND VERSION iOS Development environment: Xcode 15.0, macOS 14.4.1, Objective-C Run-time configuration: iOS 17.2.1, DESCRIPTION OF PROBLEM I am developing an application that uses NetworkExtension (VoIP local push function). But iOS sometimes doesn't call didActivateAudioSession after following sequence. Would you tell me why iOS doesn't call didActivateAudioSession ? (I said "sometimes", but once it occurs, it will occur repeatedly) myApp --- CXStartCallAction --->iOS myApp <-- performStartCallAction callback --- iOS myApp --- AVAudioSession setCategory: AVAudioSessionCategoryPlayAndRecord --->iOS myApp --- AVAudioSession setMode: AVAudioSessionModeVoiceChat --->iOS myApp <-- didActivateAudioSession callback ----iOS I suspect that myApp cannot acquire an AVAudioSession if another app is already using AVAudioSession. [QUESTION1] Is my guess correct? Should I consider another cause? [QUESTION2] If my guess is correct, how can I prove if another app is already using an AVAudioSession? This issue is based on a customer complaint, but the customer said they don't use any other apps. Best Regards,

Hello, I have developed an update for my app where I handle push notifications (from APNs or FCM) and manage different notification categories using checks, storing the values in UserDefaults. So far, everything works fine, and the logs correctly indicate the state of each category when a notification is received. The issue arises when handling notifications in three states: foreground, background, and terminated (killed). I am using UNNotificationServiceExtension and in the didReceive method, I check the state of the notification. Depending on whether the state is true or false, I want the notification to be shown or not to the user. However, despite my efforts, the alert/notification part of the payload always ends up being displayed. Additionally, I have disabled serviceExtensionTimeWillExpire as it was being triggered, but still, after a few seconds, the notification ends up appearing. I have configured everything correctly, including mutable content, notification handling, etc. How can I prevent these notifications from being shown to the user when needed? Thank you for your assistance!

按开发者文档进行请求，响应405 接口文档：https://developer.apple.com/documentation/devicemanagement/activation_lock_a_device 实际请求如下： curl --location --request POST 'https://mdmenrollment.apple.com/device/activationlock' --header 'X-ADM-Auth-Session: 1720513551341O1O293...' --header 'User-Agent: Apifox/1.0.0 (https://apifox.com)' --header 'Content-Type: application/json' --header 'Accept: /' --header 'Host: mdmenrollment.apple.com' --header 'Connection: keep-alive' --data-raw '{"device": "FNXQX..."}' 这个问题要怎么解决？

I am working on a VoIP based PTT app. Uses 'voip' apns notification type to get to know about new incoming PTT call.  When the app is in foreground, the app gets to know about incoming VoIP PTT call through incoming push notification. After receiving notification, the app receives audio from the server. This works properly, as expected. The app faces issues in receiving apns notifications only when the app is in background. Issue: My app is in background and iPhone locked, the server sends apns notification to the target iPhone about a new incoming VoIP call. Server received 200 success response code from APNS. But the app in background did not receive the notification. Second time, the server sends notification about second VoIP call. App did not receive notification. Third time, server sends notification about 3rd incoming call. This list goes on. Everytime server sends a notification to the target phone, success response is received from APNS. 
 Now, bring the app to foreground, the app receives all the pending notifications at once. This scenario happens only in a few phones. Those customers are missing PTT calls.
Can you please provide us suggestions to solve this issue ? My app uses unrestricted-voip entitlement

I am working on a VoIP based PTT app. Uses 'voip' apns notification type to get to know about new incoming PTT call. When my app receives a PTT call, the app plays audio. But the call audio is not heard. While checking the phone volume, the API [[AVAudioSession sharedInstance] outputVolume] returns 0. But clearly the phone volume is not zero. On checking the phone volume by pressing side volume button, the volume is above 50%. This behavior is observed in both app foreground and background scenario. Why does the API return zero volume level ? Is there any other reason why the app volume is not heard ?

I was able to successfully archive my main app that has a NotificationServiceExtension. However, once I installed the app via Testflight, I was able to receive a notification, but the push notification modifications I did were not applied. When I just ran it via Xcode, the push notification modifications worked. Do I need to archive the NotificationServiceExtension instead of my main app?

Hello, I would like to implement the function of unsubscribe FCM topics that I was subscribing to when I received a specific push from the server. It was implemented through "willPresent" when the app was running, but I don't know how to do it when the app is not running. I activated the 'Background fetch' and 'Remote Notifications' options for now. const message = { notification: { title: 'FCM Topic UnSubscribe', body: 'TestTestTest', }, data: { payload: JSON.stringify(payloadJson) }, apns: { payload: { aps: { sound: 'default', 'mutable-content': 1, 'content-available': 1 } } }, topic: 'unsubscribe_topic', }; Test node code Payload contains the type of topic you want to unsubscribe from. And I added a function to receive push from didReceiveRemoteNotification and handle logic. But this doesn't work. Does Remote Notification (content-available) not work in iOS's Not running and Suspended state?? I'm also using the Notification Service Extension, is this related to it?

I have been trying to solve this issue for the last four day. Can any one help. Than you.

I am unable to receive push notifications through my Apple Wallet pass. Based on the documents I have read, I have set up my APN provider and should be sending all the necessary information. Furthermore, my logs show that I am successfully sending my notification to APN, so it is confusing that no notification appears on my phone. Below are my code snippets: apnProvider.js: const path = require('path'); const options = { cert: path.resolve(__dirname, '../certificates/signerCert.pem'), key: path.resolve(__dirname, '../certificates/signerKey.pem'), passphrase: 'test', production: true }; const apnProvider = new apn.Provider(options); module.exports = apnProvider; APN provider using an auth key (currently not being used but was previously and provided the same success message): token: { key: path.resolve(__dirname, '../certificates/AuthKey_627HR2YX2S.p8'), keyId: "627HR2YX2S", teamId: "72J45J9PH3" }, production: true }); API Rout: const { userId } = req.body; console.log(`Received POST request on /api/send-notification for user`); try { console.log(`Sending notification to user: ${userId}`); const user = await User.findById(userId); if (user && user.deviceToken) { console.log('User Name:', user.firstName, user.lastName); console.log('Device Token:', user.deviceToken); let notification = new apn.Notification(); notification.expiry = Math.floor(Date.now() / 1000) + 3600; notification.badge = 1; notification.sound = 'default'; notification.alert = 'Hello World'; notification.payload = { messageFrom: 'Kudjo' }; notification.topic = 'pass.com.kudjo'; console.log(`Sending notification to device token: ${user.deviceToken}`); console.log(`Notification payload:`, notification.payload); apnProvider.send(notification, user.deviceToken).then(response => { console.log('Push notification sent:', response); res.status(200).json({ message: 'Notification sent' }); }).catch(error => { console.error('Error sending push notification:', error); res.status(500).json({ message: 'Error sending notification One' }); }); } else { console.log('User or device token not found'); res.status(404).json({ message: 'User or device token not found' }); } } catch (error) { console.log('Error sending notification:', error); res.status(500).json({ message: 'Error sending notification Two' }); } }); Thank you for your help!

I need to access notification data that accumulates in the Notification Center, similar to text messages, through BLE communication in my app. How can I achieve this?