The developers have announced the start of the PUBG Mobile 4.1 beta testing. Anyone can download the beta client of the game on Android.
Testing on iOS is available only to players who applied in advance through the official Discord channel PUBG MOBILE BETA. Approved participants will receive an email from TestFlight notifying them that the beta version is ready for download.
If you have an Android device, you can download the 32-bit or 64-bit version of PUBG Mobile 4.1 Beta from the official source. The beta client installs as a separate app and does not affect the regular version of the game from Google Play.