
Usually po restart will do the job kasi all or most of the settings will return to default.
Pero kung hindi po nangyare yung ganun, you might want to try to Lock your Network Status po sa LTE only or WCDMA only or anything pero disregard mo muna po yung GSM. WCDMA (Means 3G), GSM (2G ) , LTE (4G). Baka po wala lang syang masagap na signal.
Heres my thread po to guide you if di mo pa po alam kung paano. Good luck
https://phcorner.org/t/lte-fast-con...r-network-type-from-3g-hspa-to-4g-lte.220677/
Eryn