Charging current Decreasing

[Usmani_Shahid]

Why does the charging current decrease slowly when I put my phone on charge. I check current through an app called ampere, when I plug in the charger it shows the charging current 2270mA but slowly it decreases to 1030mA and the phone charges very slowly. Anybody please help 

[owl123]

Charging speed decreases once the phone reaches 90-95 %, so as to protect the battery.

[Usmani_Shahid]

I never charge my phone above 85%

[Usmani_Shahid]

It decreases the speed even if its at 50%

[sandip0306]

Maybe problem with the app

[Usmani_Shahid]

But the phone charges very slowly despite having a 15 watt fast charger

[sandip0306]

Try other charger

[Usmani_Shahid]

Tried with 18 watt fast charging power bank but same

[mHappiee]

It's not a problem, any good company which cares for its devices will do it.
Charging current starts reducing when Battery reaches around 60-70%. Battery charges fastest between 10-15 to 75-85%, then the current is reduced.
Because charging Battery produces Heat, which makes battery warmer and is not good for a battery's health. Many company uses different types of Charging technology in order to maintain Battery's health and maintain Fast charging speed (basically by dividing one battery into 2-3 smaller batteries, because of this current going on each battery is also reduced by that factor).
.
Charging capacity is measured by measuring charge pressure in the battery, so in the end points (ie near 0-10% and near 90-100%), there are more errors in calculating it, which is to be kept in mind. So they reduce charging speeds in order to not overcharge and maintain Battery's health.

[Usmani_Shahid]

It should charge fast when it is below 50 but it doesn't