Make sure your Android phone is up to date on the OS front. Keeping it up to date will make it snappier and install the latest security protocols. You can go to Settings > General > System Update to ...
The Doogee S200 Max proves you can have extreme durability and performance in one device. Just don't expect it to go easy on your wrists.
If your Android feels sluggish, a few focused tweaks can make it feel surprisingly close to new again. A detailed how-to ...