The last thing I know I did was to try *#61# to check the voicemail numbers as I was thinking of setting a longer timeout, but I didn't actually change it. If I go into Additional call settings I get 'Network or SIM card error', but I expect that is linked to the lack of network. However, I wonder if something on the SIM is messed up. Sprint phones, like the LG V50 ThinQ 5G, will be able to work on T-Mobile's network. Lynn La/CNET Just because the merger has closed does not mean that your Sprint phone will no longer connect. Jul 06, 2020 · This will also reset the connection of your phone to the network which usually fixes this kind of problem. Press and hold the Power and Volume down key for up to 45 seconds. Wait as the device Usually this problem arises from pressing the new “+” icon that appears next to “Mobile network” on your “Network & internet” screen, which mistakenly disconnects you from your data connection. To fix this, go to your Android Settings, then type “carrier” into the search box at the top. I have a Galaxy Note and it was on AT&T network. I had it unlocked so that I could use it for my T-Mobile service. Now that I am back with AT&T the SIM card is not being recognized. It says "SIM card not installed". The SIM card works just fine in other At&T phones. Will this solution help? If anyone can please help me I would appreciate it.

Not quite sure of your phone but go to Home > Settings > Wireless and Networks > more > Mobile Networks > Data Connection. This setting is useful if you want to control your cell data usage. If you turn it off your apps cannot connect to the internet 'in the background' without you being aware of it.

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Mar 06, 2019

Try going to Settings then Network. It is in the sim settings. Make sure Wifi Only is not the option. Set it to Wifi Preferred or Cellular Preferred.