Use APKPure App
Get APN switcher old version APK for Android
apn switcher, data enable, 3G/EDGE/GPRS,
APN switcher is a simple widget can be activated quickly with a single click (or disable), the data connection is (3G/EDGE/GPRS). It is also able to fast toggle with 3g/2g.(tested with 4.0.3 and 1.6).