How To Check What Frequency Band Is Used By The Cell Phone?

There are many ways to check what frequency band is used by your cell phone. Here is our recommendation.

For iPhone, unfortunately, iOS system does not allow third-party app to access low-level data, but you might be able to check it in "Field Test Mode"
1. Dial *3001#12345#*, tap dial button
2. Click 'serving cell info'
3. Check 'freq band indicator'; 

For the Android phone, it could use the app: LTE Discovery, tap SIGNALS, check EARFCN(band number), 'DL Freq and UL Freq'. 'DL EARFCN and UL EARFCN '.

Network	Frequency Bands
	Band 2 1900MHz	Band 4 2100MHz	Band 5 850MHz	Band 12/17 Lower700MHz	Band 13 Upper700MHz	Band 25	Band 26
AT&T	3G/4G	4G	3G/4G	4G
Verizon	3G/4G	4G	3G		4G
T-Mobile	3G/4G	3G/4G		4G
Sprint	3G/4G		3G/4G			4G	4G
metroPCS		3G/4G		4G
Bell	3G/4G	4G	3G	4G
Telus	3G	4G	3G
Rogers	3G	4G	3G	4G
Fido	3G	4G	3G	4G
Freedom		3G/4G
SaskTel	3G	4G	3G

Band 2 and 5 are portions of Band 25 and 26, by the FCC regulations, band 25 and 26 are not supported by a consumer signal booster, so Sprint customers might have signal improved or not, it would depend on the locations.