I had updated my Iphone to IOS 15.3.1 . But now, my Iphone still have problem. often lose signal and lose internet . I feel this is a bad experience using a high-end iPhone
Try first to optimize the range of the mobile network, see this Apple article:
If you see No Service or Searching on your iPhone or iPad
If you see No Service or Searching on your iPhone or iPad - Apple Support
Have you contact your carrier?
See the following Apple articles:
Connect to Wi-Fi on your iPhone, iPad, or iPod touch
Connect to Wi-Fi on your iPhone, iPad, or iPod touch - Apple Support
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
If your iPhone, iPad, or iPod touch won't connect to a Wi-Fi network - Apple Support
Recommended settings for Wi-Fi routers and access points
Recommended settings for Wi-Fi routers and access points - Apple Support
If you need help with your Wi‑Fi password
I have do your instructions, but the signal loss, the internet still occurs, not only that, the frequency of signal loss is even more than before.
my phone have problem
