Epson sometimes offers an update utility for their printers. This tool can automatically find and install the latest drivers and software for your printer.
Search for or Loyverse POS in the Google Play Store. These apps act as the "driver" to bridge your phone and the printer. iOS (iPhone/iPad) : pt210 printer driver download upd
Cons
Use a standard micro-USB charger. The 1500mAh battery provides several hours of active use. Epson sometimes offers an update utility for their printers