What are the frequency bands of the Ulefone Rugking 3 Pro?

4G: LTE-FDD: B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28A/28B/66

LTE-TDD: B34/38/39/40/41

3G: WCDMA: B1/2/4/5/8

2G: GSM: B2/3/5/8

Which carriers is it compatible with?

Compatible with most carriers such as T-Mobile, Metro PCS, Mint Mobile and others.

Check compatibility with your local bands before purchase! (Not compatible with AT&T or Cricket)

What to do if your Rugking 3 Pro can't work with your carrier?

You need to activate the SIM card on an existing phone that supports your carrier. After you receive the initial activation texts or get 4G signal, put the SIM card back into your Rugking 3 Pro.

How to activate the virtual 8GB memory expansion?

The Virtual Memory Expansion can be activated in Settings and adds up to 8GB of RAM. Some software may not be compatible with this feature.