Issue With Signal Band On Mimax 3gb/64gb

[Banks Dominion]

I was toggling around Network settings and mistakenly clicked on USA Band which is the only option were I was then and since then, network went off my phone sim1.

Please how do I restore my sim1 network?

I have tried flashing stable fastboot miui v8.1.4, v8.1.9 and latest v8.2.1.0 yet it couldn't fix it. What do I do?

My Device is MIMax 3gb/64gb Helium.

 

[dogiex]

I was toggling around Network settings and mistakenly clicked on USA Band which is the only option were I was then and since then, network went off my phone sim1.

Please how do I restore my sim1 network?

I have tried flashing stable fastboot miui v8.1.4, v8.1.9 and latest v8.2.1.0 yet it couldn't fix it. What do I do?

My Device is MIMax 3gb/64gb Helium.

Google your operators APN settings and make a new APN in your phones settings.

 

[Banks Dominion]

There is no network at all on the SIM. I can view contacts and other things on the SIM bit no network. I think it's not apn issue.