Android

I have been trying to unlock an ATT&T provide phone (V340u) without success. I first tried the unlock portal, but received a message that I should use the Unllock device app on my phone. Unfortunately, this app immediately closes every time I try to open it.  I've tried uninstalling/updati

I set up wifi, connect using my phone. Everything works fine, loads quickly, but games on sites do not start for me. Tell me the problem can be in wi-fi? I can't check on the mobile internet.

When trying to block a call using ActiveArmor, it shows a message saying, "No cellular connection. AT&T ActiveArmor Mobile Security needs a working cellular connection to activate. Turn on Mobile Data in Settings." (See screenshot below.) In my Samsung Galaxy S9, going to Settings > Conne