How Do I Know If Samsung Galaxy A51 Is 3g Or 4g ^new^ -

This is the core confusion. You have confirmed your phone is a 4G A51 (SM-A515F), but the icon stubbornly says “3G.” Here are the five real reasons:

A: No. You cannot upgrade hardware. However, your Galaxy A51 is already 4G. If you are seeing 3G, follow the troubleshooting in section 9 above. How do I know if SAMSUNG Galaxy A51 is 3G or 4G

To exit, simply press the back button or close the dialer. This is the core confusion

To determine whether your is a 3G or 4G model, you need to understand two things: However, your Galaxy A51 is already 4G

You now have seven methods, but the most definitive is this:

Go to Settings → Connections → Mobile Networks → Network Mode. If you (or someone else) set this to “3G only” or “2G/3G auto,” your phone will never use 4G. Change it to “LTE/3G/2G (auto connect)” to fix this.