[chanalku91]

@chanalku91 The problem is in your end, you installed, tweaks your phone that are still in warranty period, so it means that your warranty is voided due to that and I can see that the reason that your phone got a problem is because of that tweaks you installed it might damage or comaptibilty issue.

but the problem is why some operators here get the best signal on my smartphone (h +) like telkomsel and indosat! I'm not sure the problem is tweaked because I tested my smartphone vivo y21L