Realme
Set Start Date for Data Usage Stats auf Realme
Realme UI tracks mobile data usage against a fixed start date each month. By default this is set to the first day of the month, which rarely matches the actual billing cycle of a mobile provider.
If the start date does not match your billing date, the data warning and the data limit trigger too early or too late. The counter resets before your new billing period starts, so the numbers you see never line up with what your provider charges.
You can change this reset day manually. Go to Tap on Settings ➔ Tap on SIM card & mobile data ➔ Tap on Data usage ➔ Tap on Mobile data limit ➔ Tap on Start date for data usage stats ➔ Set the Start date and tap Save.
Pick the day your billing cycle actually begins, not the first of the month. This applies to any day, since most tariffs do not bill exactly on the 1st.
Keep in mind that this setting only shifts the counting window. It does not change your actual data allowance or the amount your provider bills. If your usage numbers still look wrong after adjusting the date, check whether background apps or a second SIM are consuming data outside the tracked period.