If you know exactly the frequency your device suports, please choose selection and submit.

How to know whether a mobile phone will work in my country? Many people may wonder before buying a new cell phone. In this article, we'll show you how to use the Band Class Chart and the GSM Bands Chart to find out the truth.

Take Xiaomi Mi 6 4G Smartphone, Brazil, for instance, this following picture shows the phone's suported band classes. Say, you want to know whether this phone will work with 3G or 4G in Brazil.

Step 1. Find out your country's frequency and the band class Mi 6 supports.

  • GSM B2/B3/B5/B8 CDMA1X/EVDO BC0 (support all 2G bands)
  • WCDMA: B1/B2/B5/B8 (3G)
  • TD-SCDMA: B34/B39 (3G)
  • FDD-LTE: B1/B3/B5/B7/B8 (4G)
  • TD-LTE: B38/B39/B40/B41 (4G)

Step 2. Check out the 3G & 4G frequency Mi 6 supports (Use the radio interfaces chart)

  • WCDMA: 2100/1900/850/900 (3G)
  • TD-SCDMA: N/a(3G)
  • FDD-LTE: 2100/1800/850/2600/900 (4G)
  • TD-LTE: 2600/2300/2500 (4G)
Radio Interfaces Band Class - Frequency Chart
Item 3G (UMTS) 3G (CDMA)
Band Class B1 B2 B4 B5 B8 BC0 BC1
Frequency (Mhz) 2100 1900 PCS 1700/2100 AWS 1 850 900
800 1900
Item 4G (LTE)
Band Class B1 B2 B3 B4 B5 B7 B8 B12 B13
Frequency (Mhz) 2100 1900 PCS 1800+ 1700/2100 AWS 1 850 2600 900 700
Band Class B17 B20 B25 B26 B28 B30 B38 B40 B41
Frequency (Mhz) 700
1900+ 850+ 700
2300 WCS TD 2600 TD 2300 TD

Step 3. Check out the 3G & 4G frequency of Brazil (Click B in the country list)

GSM Bands Information by Country

Country Network Type Provider/Carrier Bands
Brazil2G-GSM 850/900/1800/1900
3GVivo3G 850/2100
TIM3G 850/2100
Sercomtel3G 850/2100
Nextel 3G 1900/2100
Claro 3G 1900/2100
Algar 3G 1900/2100
Oi Brazil 3G 2100
4GClaro4G LTE 2600Mhz
Oi Brazil4G LTE 2600Mhz
TIM4G LTE 2600Mhz
Vivo4G LTE 2600Mhz
On Telecom4G LTE 2600Mhz
SKY Brasil4G LTE 2600Mhz
Nextel4G LTE 1800Mhz

Related: Country-based mobile phone network frequency bands coverage guide

Step 4. Compare the data and find out that Xiaomi Mi6 supports bands in Brazil:

  • Support all 2G bands
  • WCDMA: B1/B2/B5(3G)
  • TD-SCDMA: not support (3G)
  • FDD-LTE: B3/B7(4G)
  • TD-LTE: B38/B39/B40/B41 (4G)

The carrier with better compatibility is Claro, which support 3G 1900/2100 and 4G LTE 2600MHz.

Let's take a look at the "Radio Interfaces Frequency Bands" chart. Pay attention to the relationship of band class and frequency. Right, a fixed frequency corresponds to a fixed band class, for instance, B1 stands for 2100, whether in 3G (UMTS) or 4G (LTE), B3 represents 1900PCS, etc.


1. 700bc is not the same as 700ac, that means they have different band classes.

2.1800MHz is equal to 1800+MHz.

What is GSM and GSM frequency?

The full name is Global System for Mobile Communication. It's a digital mobile communication system widely used in Europe and other parts of the world. It is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA).

GSM frequency: the range of frequency band used for GSM phones.

What is a band?

A key part of any mobile phone specification is its operating frequency bands. The supported frequency bands determine whether a certain handset is compatible with a certain network carrier or network standard and thus determines the region it can or can't be used in.

What is 2G, 3G, 4G or 5G?

There are several generations of GSM network standard. They are GSM (2G, 2.75G), WCDMA (3G), HSDPA (3.5G), HSUPA (3.75G), LTE (4G, including FDD-LTE, TD-LTE), The G here stands for generation. The higher the generation, the higher the upload/download speed.