Time Needed : 5 minutes

First off, if you’re using prepaid, just make sure that you have enough credits to use the service because if not, then there’s no point in troubleshooting your phone when the problem is your account. The same goes for postpaid users; make sure you’ve paid your bills before you troubleshoot. But assuming it’s not account-related, here are the things you need to do:

1. Force restart your phone

   Had the texting service been working properly before this issue occurred, then it’s probably just a minor glitch in the app or the firmware. The first thing that you need to do is to refresh your phone’s memory by doing the forced restart. This will not just refresh the memory but also reload all apps and services. If the problem is a minor one, then this might be enough to fix it. Here’s how it’s done: 1. To do so, press and hold the volume down button and the power key for 10 seconds. Your device will shut down and power back on. 2. When the A51 logo shows, release both keys and wait until the reboot is finished. After the restart, try to send a text message to your own number and see if that goes through. If it doesn’t, then try the next solution.

2. Reset the network settings of your device

   Regardless of whether you’re on prepaid or postpaid plan, when a SIM is seated properly, your phone will immediately detect or use the correct Message Center Number. It’s a series of numbers that may appear like a phone number but it’s very important in making sure the text messages are sent over to your provider’s network. Without it, your SMS won’t go through. The center number may have been deleted or changed. Or, some network settings on your phone may have been changed. So to rule out these possibilities, you need to reset the network settings of your Galaxy A51. Here’s how it’s done: 1. Swipe down from the top of the screen and then tap the Settings icon. 2. Find and tap General management. 3. Touch Reset. 4. Tap Reset network settings. 5. Tap the Reset settings button.  6. If prompted, enter your PIN, Password or Pattern. 7. Finally, tap Reset.After doing this, send a text message to your own number to see if the problem is fixed. If your Galaxy A51 is still not able to send the text, then do the next solution.

3. Call your service provider

   After refreshing your phone’s memory and resetting the network settings of your Galaxy A51 and the problem remains, what you need to do next is to call your service provider. When it comes to texting problems, your provider has all the answers as they can check the status of your account to know if it’s barred from using the service for some reason, as well as check the status of the network or tower where your phone gets service from.