To fix Error 400 when signing into Microsoft account, follow these instructions i.e. use a different mehtod to sign in, ...
XDA Developers on MSN
This is the one network setting most people never think of when they have problems
There are several ways to troubleshoot the DNS on your network or device. First, try pinging a domain with its IP address.
Technobezz on MSN
How to fix "No SIM card detected" error on Android
Fix the 'No SIM Card Detected' error on Android with 15 proven solutions. Quick fixes, eSIM troubleshooting, and when to get a replacement SIM.
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