PhoneArena - This is what Samsung's Galaxy Note 21 Ultra could look like 🔥 Check out all of the renders: https://www.phonearena.com/news/samsung-galaxy-note-21-concept-renders_id129297 | Facebook
How long can smartphone batteries last on the average? Since the inception of cellphones, both Apple and Samsung, I have never had to replace a battery despite heavy usage daily. - Quora
![Samsung Galaxy S4 extensive battery tests are out: average users could use it for three days without charging - PhoneArena Samsung Galaxy S4 extensive battery tests are out: average users could use it for three days without charging - PhoneArena](https://m-cdn.phonearena.com/images/articles/81722-image/s4-battery-1.jpg)