I'm currently using iPhone 5s and 7 plus (with latest firmware) and the problem lies on both the devices, the call summary stuck's my devices ( sometimes it work's fine ) not allowing to accept or done(call summary) and finally I need to restart my phone several times
Call summary blocks my iPhone
User-centric queries/comments such as this are perhaps best put to Apple's public community support forums, run by AppleCare, and/or Apple's twitter support account, vs. risking off-topic here in the DevForums, thanks and good luck. Users can feedback via http://www.apple.com/feedback/ - Individuals using betas are free to use the Feedback Assistant; devs can use the 'Report Bugs' link, below right.
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Tags: off-topic thread