T-Mobile’s 5G Network

Finding the right band of cellular frequency to use with your cell signal booster

T-Mobile band 71 600 MHz cellular frequency cell signal boosters

Updated May 5, 2021

Band 71 is T-Mobile’s long-range 5G frequency

Cellular phones use a wide range of radio frequencies. Lower frequencies with longer wavelengths travel farther, so phones in remote areas rely on lower-frequency cellular bands to communicate with distant cell towers.

All major carriers—including T-Mobile—use bands in the 700 MHz range for long-distance cellular communication. Since 2017 T-Mobile has also been rolling out service on band 71 in the 600 MHz range.

Cell signal boosters do not support band 71

T-Mobile’s band 71 is not amplified by any currently available consumer cellular booster.

However, today’s 4G/5G boosters do support other T-Mobile cellular bands, including band 12 (700 MHz), band 2 (1900 MHz), and bands 4 and 66 (1700/2100 MHz).

If you’re a T-Mobile customer and you have access to other bands of frequency, then a cell signal booster can improve the signal in your home, office, or vehicle.

Find out if another T-Mobile cellular band available in your area

These instructions will work best if you stand outside your home or office (under open sky).

Android instructions

Step 1: Turn off 5G on your phone. This will tell your phone to ignore band 71 and look for alternative T-Mobile bands in your area. How you disable 5G will vary depending on what brand of Android phone you have.

  • Samsung phones: Open Settings and go to Connections, then choose Mobile Networks. Tap Network Mode and choose LTE/3G/2G or another 4G/LTE option.
  • Most other Android phones: Open Settings and go to Network and Internet, then choose Mobile Network. Tap Preferred Network Type and choose 4G.

(You can switch back to 5G by following the same steps and reversing the last setting.)

Some Android phones do not allow you to switch 5G off. If you have such a phone, that’s okay; go ahead and proceed to step 2 anyway.

Step 2: Use an app to check which bands your phone receives. Network Cell Info Lite—a free, ad-supported app—displays your serving cell (the strongest cellular band in your area) and neighbor cells (other available bands) on its dashboard-like Gauge screen. If T-Mobile bands 2, 4, 12, or 66 are available in your area, a cell signal booster may work for you.

Links to third-party software are provided “as is,” without warranty of any kind, either expressed or implied, and such software is to be used at your own risk. Powerful Signal will not be liable for any damages you may incur in connection with downloading, installing, or using such software.

iPhone instructions

Step 1: Turn off 5G on your phone. This will tell your phone to ignore band 71 and look for alternative T-Mobile bands in your area.

Open your Settings and go to Cellular. Select Cellular Data Options, then Voice & Data. Tap LTE to switch to 4G/LTE mode.

(You can switch back to 5G by following the same steps and reversing the last setting.)

Step 2: Look for your serving cell band in Field Test Mode.

Dial Six-pointed star icon3001#12345#Six-pointed star icon and press the Call button:

Dial *3001#12345#* to put an iPhone into Field Test Mode

Your iPhone will switch to the Field Test Mode menu.

In the Dashboard tab, scroll down until you find the freq_band_ind section, which indicates your serving cell (the strongest cellular band in your area). If your serving cell is band 2, 4, 12, or 66, a cell signal booster may work for you.

Swipe up on your iPhone to exit Field Test Mode.

Call Powerful Signal at 866‐912‐3444

…or contact us online. We can help you determine if your T-Mobile phone will work with a cell signal booster.