Am saying my I phone 7 never hang or restart or freeze at any condition. Using I phon 7 128GBwith ios 10.2. I can say confidently that I phone are only smartphones where u fon’tneed to compare its specs with any flagship. Bcoz its based on eorld smooth Os. It run like butter. Dosen’t matter fual core and quad core processor does not matter 1GB ram or 2GB ram. Where whole smartphone manufacture trying to make fool us with higher RAM, higher mAhand higher Ghz. But I phone proves if u can afford apple u get real expirience app and prformance.