Are the battery life apps reliable ?

They are as accurate as can be expected. After a battery recalibration, the results may take some time to read (somewhat) properly...

Don't stress on the numbers/results too much. The battery readings can be affected by current battery voltage/temperature/load/etc. The results can vary widely...I've seen many discrepancies in the results.

The only thing you can calibrate is the battery sensor, no the battery.

The only battery app that I've seen recommended on this board by people I trust is one called Battery Life. It doesn't claim to improve the health of your battery.

venomx92 wrote:

Thanks guys, due to the dismal battery life of my iphone 4s ive ordered an SE, hopefully this one will be better !

In all honesty, if you still have the original battery in your iPhone 4, there's not much to be done other than replace the battery or, as you've decided, replace the phone. Batteries don't last forever.

Enjoy your new phone!

IdrisSeabright wrote:

The only battery app that I've seen recommended on this board by people I trust is one called Battery Life. It doesn't claim to improve the health of your battery.

Agreed. It gives you the raw info (if you're not on iOS 10 or 11 I believe) but does not make any wild claims as to it's functionality. Do what you will with the info it provides.

Since there is no way to "calibrate" the batteries, and the app is claiming to do something that it physically can not do... I'd say that's a no.

A stopped clock is right twice a day, too. 😉