Q: iPhone 5s,call problems

Hi pug97,

I'm sorry to hear you are having these issues with your iPhone. I also apologize, I'm a bit unclear on exactly what is happening or what you are seeing when it freezes/crashes. If it stops responding or shuts down/restarts, you may find the troubleshooting steps outlined in the following articles helpful:

If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support

If your iOS device restarts, displays the Apple logo, or powers off while you're using it - Apple Support

Note: You may want to make sure you have a current backup of your data before performing any of the above troubleshooting:

Back up and restore your iPhone, iPad, or iPod touch using iCloud or iTunes - Apple Support

Regards,

- Brenden