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Jonn119:
Good day nl,. I really don't know the problem or is it just my phone, the battery health seems to be draining so fast, i bought and iPhone 11 pm exactly 1 month ago with a battery health of %90 and now its in %86 which i consider too fast, because I'm not a heavy user as i have an android which i use for everything and use the iphone basically just for calls.. what could be the issue and possibly solution or is it normal.

Mine was 89% in Feb and now it’s 87%

Sacredness:
when your iPhone battery started draining faster as it ought not to be,there are certain factors to look out for.

1.the charger you are making used of; if the iphone charger is not a good one or maybe
you are using tecno charger head and iPhone cord altogether ,your battery will drain fast.

2.If you normally make used of your iPhone while changing.

3.Are you someone that like using power bank all the time? Isn't really advisable, just reduce the way you make use of it .

4.high voltage or low voltage,when your current fluctuate sometimes it can result to it.

5.Your iPhone is in 85% you just see a free charger somewhere you still want to charge ,it can drain your Bh.

i actually bought a follow come charger together with the phone