| ZIP Code | Verizon | ATT | T-Mobile |
|---|---|---|---|
| 92378 | 100% | 100% | 100% |
| Licensee | Address | Height | Tower Type |
|---|---|---|---|
| Los Angeles SMSA Limited Partnership | 11925 Sierra Ave, Fontana, CA 92337 | 17.7 | POLE |
| Los Angeles SMSA Limited Partnership | 540 CA-18 Business, Big Bear Lake, CA 92315 | 46 | TOWER |
| Los Angeles SMSA Limited Partnership | 42630 Moonridge Rd, Big Bear Lake, CA 92315 | 19.8 | POLE |
| Los Angeles SMSA Limited Partnership | 564 Marlowe Dr, Big Bear, CA 92314 | 25 | POLE |
| Los Angeles SMSA Limited Partnership | 7770 CA-138, Phelan, CA 92371 | 24.4 | POLE |
| Carrier | Address | Comment | Date Added |
|---|---|---|---|
| Verizon | 164 E Coral Tree Dr | 4G data is ok most of the time. | 2016 |
| Verizon | 26950 San Bernardino Ave | Probably due to recent buildings having been constructed in this area, blocking it, the signal is reduced to the following at this location: 3G: CDMA (voice) RSSI: -91 db (61%) EVDO (data) RSSI: -120 db (0%) CDMA ECIO: -11 db (36%) LTE 4G: LTE RSRP: -110 db (23%) LTE RSSI: -76 db (99%) LTE RSRQ: -17 db (21%) LTE SNR: -3 db (44%) LTE CQI: n/a LTE Signal Strength: 17 db (55%) Data connections are completely unresponsive. | 2016 |
| Verizon | 27512 W Lugonia Ave | Spotty and non-existent cell service for years since they quit leasing a cell tower near us. , Redlands, CA, United States | 2019 |
| T-Mobile | 860 E Brier Dr | No service complete dead zone | 2016 |
| T-Mobile | 18 E Citrus Ave | Spotty service, no service and dropped calls all while outdoors. | 2015 |
| Carrier | Address | Phone | Directions |
|---|---|---|---|
| AT&T | 4394 N University Pkwy Ave Suite A, San Bernardino, CA, 92407 | 909-473-7999 | Directions |
| Verizon | 4120 East Highland Avenue, Highland, CA, 92346 | 909-359-0609 | Directions |
| T-Mobile | 4124 N Sierra Way, San Bernardino, CA, 92407 | 909-475-8773 | Directions |