When you have a new smartphone, the battery life is not the best, but it can last the day, but, with time, you will be carrying your charger with you.
How bad is my iPhone battery? There is an app that tests the health of your iPhone Battery. Called BatteryScore, is the only app that checks the real autonomy of your battery and is free.
Your iPhone battery is lasting less than its usual. The best is to test it and see if you need to replace it, or a new phone. With the app Battery Score, your phone will be tested with several kinds of processes and, at the end, you will see a score. If the score is high, your battery is OK, if the score is low, you are having problems.
But. How do I know if my score is good? You can go into Battery Life website and compare it with other devices just like yours. Is the score is similar, your battery only shows the effects of the time, if is significantly lower, you are in trouble.
Battery Life will require at least 45 minutes of testing, with your phone in Airplane Mode. The phone has to be charged at 100% and plugged into the charger. The app will tell you what you need to do and unplug it.
The test takes 45 to 50 minutes and, the idea is stress the battery. Every phone performs the test under the same parameters, so you`ll have an accurate chart. If you want to upload your score, you`ll need to pay, but if you just want to look and compare is 100% free.
Battery Score is great if your iPhone or iPad is still under warranty, because if you find a problem, you can take it and they will fix it or, even give you a new phone, that happened to me.