I'm proud that I got this phone. 4 years and still kicking, after 3 battery replacement, still works! (Using my sister's j2 prime battery for now because I want to test how long it would take to discharge it) and the battery last for about 1 week if you didn't use it. The performance **bleep** tho. And The speaker broke (i broke it). For those who hates Samsung j2 prime because of the storage, i fixed it by myself.
well my samsung galaxy s3 still alive since 2012 during it was launch on May 2012. the battery bloated a little bit but still functions and there are amoled burns common for old samsung smartphones speacially 9 years. 2,100 mah is very short nowadays compare before.