Due to a design trend set by the ~~retards~~ geniusses at Apple (the same people that have always built phones with limited functionality and relatively weak, slow-charging batteries), nearly all mobile phones released in the last three years have **non-replaceable batteries.** If you think about it, non-removable batteries are a rather [terrible idea.](https://en.wikipedia.org/wiki/Planned_obsolescence#battery) The battery is the fastest-aging part of a mobile phone. Making it non-modular is an irrational and anti-logical idea. A replacement by service usually defeats the water resistance seal. Users should at least have **the option** to purchase mobile phones with replaceable batteries, to preserve the freedom of confident charging without bothering with / worrying about battery aging. Preserving battery lifespan requires keeping the charge between around 25% to 75, but on a mobile phone with replaceable battery, one can always charge to 100% with full confidence, and not give any damn about battery lifespan, **because it is always replaceable anyway!** Some of the lastest excellent mobile phones with replaceable batteries were the Galaxy S5 (early 2014), Galaxy Note 4 (late 2014) and LG V10 (2015), which actually still do well in 2019! Apple iOS 13 has introduced a feature that limits battery charging to 80%. Android phones could do that with root-access apps for years, and some laptops had this feature for a decade. But with a replaceable battery, one never needs to worry about that. Also, I know that a non-replaceable battery allows **slim design**. But for me, practicality and functionality is always first. Also, *“slim design”* has become a buzzword, and Apple has proven that Apple users still purchase the iPhone 11, despite of >8mm thickness (~2mm thicker than iPhone 6 and 6s), the same ~~iSheep~~ people that preached in 2013 that Android-running mobile phones such as ~7mm Galaxy S4 are *“too thick”*.