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Ontario, CA Carrier Reviews & Coverage Maps

1. Verizon 2.2 star rating (2.2 stars | 5 Reviews)
2. T-Mobile 1.3 star rating (1.3 stars | 4 Reviews)
3. AT&T 0.7 star rating (0.7 stars | 3 Reviews)
4. Sprint 0 star rating (0 stars | 4 Reviews)

Total Coverage 1.3 star rating (1.3 stars | 18 Reviews)
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2 Out of 5 (2 stars) | South of Riverside From the 60 Fwy and 360 Turn Ar | Philadelphia , Ontario, CA 91761 |

T mobile is good in what they advertise,money that is! But if I'm at my kids soccer games, the service stinks. 5 times out of 10, I won't get good service in ontario. The only place T-Mobile works good is L.A.

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1 Out of 5 (1 star) | Ontario Mills, Ontario, CA 91764 |

I work near Ontario Mills, and the whole area has almost no data for a 4 mile radius. I have full bars, but it is absolutely useless due to congestion. It is frustrating beyond belief to work here 9-6 and get horrible speeds. Seriously, how can you have just 1 tower in the busiest part of Ontario?

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1 Out of 5 (1 star) | Lassen Ave. | Grove, Ontario, CA 91761 |

Told would get better if I bought a better / newer phone; SERVICE WORSE! I live 6 miles from ONTARIO INTERNATIONAL airport, 1 mile from I-60, 1 mile from a major hospital, 5 miles from I-15, about 6 miles from Chino airport. I guess DONALD Trump is right, our country is on a downward slide. Had good service until 5 months ago, now a half a pinky toe in the boot! I think 2 run cans and a string would do better!

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3 Out of 5 (3 stars) | Euclide | F St., Ontario, CA 91761 |

I want to find the location of my phone that I lost about 1 month ago. And I want 4gLTE network.

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1 Out of 5 (1 star) | Milliken Ave. | 4th St., Ontario, CA 91764 |

T-Mobile stinks in the Ontario Mills area. Especially in front of the Target / DSW Shoes shopping center on 4th Street, I get zero reception, no connection, "no service" shows on the screen. However, if you drive East down 4th St. towards Costco (near the 15 Fwy) you can connect although the signal drops in and out. Or, you can drive north on Milliken and by the time you get up around 6th St. or 8th St. you are finally getting enough signal to make a call. I can't understand how they can have such terrible service in the major shopping district of Ontario Mills, and right at the intersection of two major So. Cal. freeways (10 / 15). Get your act together, T-Mobile!

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0 Out of 5 (0 stars) | Landmark | Haven Ave.& Jurupa, Ontario, CA 91761 |

POOR reception, I loose my wireless signal ALLWAYS and comes back on but one bar and then 3g and then nothing. Why are Verizon and other carriers spending so much money boasting of their service when they still have lots of work to do?

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0 Out of 5 (0 stars) | South Ontario Area, Ontario, CA 91761 |

Sprint sucks in this area! Drops calls, late texts, no data - very very slow if it does connect. Good thing I don't live here.

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1 Out of 5 (1 star) | Archibald Off the 60 Freeway | Philadelphia, Ontario, CA 91762 |

I have the note 3 and its just an expensive paper weight when I go to work. One bar, not internet. I tried calling Verizon but they have no clue. I've asked around and it seems its common for Verizon users around that area. UNACCEPTABLE

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1 Out of 5 (1 star) | Riverside Dr. and Haven, Ontario, CA 91762 |

I am supposed to have high speed internet on my plan with T-MOBILE, EVERY OTHER 2 MINUTES THE SERVICE DROPS COMPLETELY WITH PHONE AND INTERNET EVEN AS I TYPE THIS! Why the HELL! I HAVE HAD IT! Its been going on for the last 3 YEARS!

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0 Out of 5 (0 stars) | Grove and Riverside | Euclid and Walnut, Ontario, CA 91761 |

lots of dropped calls cannot rely on Sprint Service. South Ontario area and Chino area almost no service bars. Lose calls all over CA southland. first chance I get, going back to Verizon!

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