Q: "NO SERVICE" - IPHONE 7+

Hi Fritzgrace,

You May find the following helpful.

If you can't make or receive calls on your iPhone - Apple Support

Should none of the above work I recommend resetting your phone to factory settings without the sim card inside.

Regards.

If this is a carrier locked iPhone, then the best option here would be to contact your carrier directly. While, if this is an unlocked iPhone, then you can try inserting some other carrier's sim card to check if you're getting network on other carrier on NOT. In this way, you would able to know if there is an issue with your sim card/carrier, or your phone. You can also try inserting your original sim card into another phone, to see if you're having the same network issue or NOT.

In any case, I would recommend contacting directly your carrier, or Apple Technical Support.

I think this is a poor network reception issue then... I would highly recommend contacting your carrier then, as I think they would be the best person to help you in this regard.

Hi

Apple has today released iOS 10.0.3.

This fixes bugs including an issue where some users may lose cellular data connectivity:

Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support