Can anyone help me with this issue? I can't dial *143# no matter how many times I do it. It keeps on dialing for like 10 seconds then it'll show connection problem or invalid MMI code whatsoever even though I have a stable 4G connection. What seems to be the problem here and how can i fix it? Salamat sa sasagot
Kahit ano gawen sir wala padin kahit restart. Pero gagano siguro siya if sa ibang phone. Yun problem ko nasa phone di ko alam pano ayusin kaya nagpapatulong ako.