CUBOT King Kong 5 Pro Rugged Smartphone Note:
- Some carriers have a few non-unlocked SIM cards, in this case, you can contact the carrier to deal with it.
- King Kong 5 PRO cell phones are turned on Volte by default. If your phone can't use Volte, then maybe your carrier without Volte in 4G.
- If your phone only displays 3G/2G, then your location is likely to have a bad signal. When you return to a place with a good signal, the phone will automatically match 4G.
Please Pay Attention: If there is a problem with the earpiece when you get the phone, it is very likely that the antenna of the earpiece has been oxidized due to long-term transportation. You need to manually puncture the oxide layer to make the perfect sound. The method of operation is to hit the table (or another hard object) with the bottom of the back of the phone(No need for much power).