| ZIP Code | Verizon | ATT | T-Mobile | 
|---|---|---|---|
| 59059 | 46% | 92% | 90% | 
| Licensee | Address | Height | Tower Type | 
|---|---|---|---|
| New Cingular Wireless PCS, LLC | 1099 US-87, Roundup, MT 59072 | 91.4 | TOWER | 
| GOLD CREEK CELLULAR OF MONTANA LIMITED PARTNERSHIP | Unnamed Road, Roundup, MT 59072 | 91.4 | TOWER | 
| GOLD CREEK CELLULAR OF MONTANA LIMITED PARTNERSHIP | 10 Tumbleweed Trail, Roundup, MT 59072 | 45.7 | MAST | 
| New Cingular Wireless PCS, LLC | 1330 Goulding Creek Rd, Roundup, MT 59072 | 50.6 | TOWER | 
| New Cingular Wireless PCS, LLC | 3259 7 Mile Flat Rd, Worden, MT 59088 | 45.7 | TOWER | 
| Carrier | Address | Comment | Date Added | 
|---|---|---|---|
| AT&T | 238 Johnny's Coal Rd | looking for coverage at my home on Johnny's Coal road in roundup mt. I am a business owner and can not afford to not get clients do to lack of communication. | 2014 | 
| Verizon | 1240 Nasturtium Dr | No 4G SERVICE. EVER. 2 or 3 bars of 3G. Data is always so slow on Verizon. Calls sometimes drop or breakup if inside house. | 2019 | 
| T-Mobile | 3121 King Ave W | Phone ok, limited data | 2015 | 
| AT&T | Hwy 384 | Limited and spotty connectivity for voice and data even though coverage map shows area as having coverage. | 2019 | 
| Verizon | 243 Pine Crest Rd | Coverage used to be good. In the last few months, it is almost non-existent. with a lot of static and dropped calls. | 2019 | 
| Carrier | Address | Phone | Directions | 
|---|---|---|---|
| AT&T | 895 Main St Suite 3, Billings, MT, 59105 | 406-294-7186 | Directions | 
| Verizon | 700 Johnson Ln, Billings, MT, 59101 | 406-256-8000 | Directions | 
| T-Mobile | 315 Main Street #100, Billings, MT, 59105 | 406-256-2153 | Directions |