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AT&T vs Xfinity in Miami
In Miami, AT&T offers faster, symmetrical uploads where available, while Xfinity reaches more homes and starts at a higher price.
Xfinity is the better overall pick in Miami because it reaches more homes and offers strong download speed, while AT&T is faster on uploads where available. Xfinity wins coverage and price, while AT&T wins speed where it reaches your address. Xfinity reaches about 98% of Miami overall. Its 2,000/300 Mbps tier reaches about 72% of the city. AT&T starts at $35/mo, and its 5,000/5,000 Mbps tier reaches about 60% of the city, making it ideal for heavy upload use if it reaches your address; Xfinity suits households prioritizing availability and value.
At a glance
AT&T vs. Xfinity, side by side.
| Provider | Type | Top speed | City coverage | Starting price | Best for |
|---|---|---|---|---|---|
| AT&T |
Fiber | 5 Gig 5 Gig upload |
96% | $35/mo | Top fiber speeds |
| Xfinity |
Cable | 2 Gig 300 Mbps upload |
98% | $40/mo | Widest availability |
Coverage map
Two different questions, two views. Top speed shows who offers the faster plan where you can actually get it. Coverage shows who reaches more of each ZIP. Or pick a single provider to see just its footprint.
Neighborhood breakdown
The better choice can shift from one Miami block to the next because availability varies by address. AT&T is especially compelling where its fiber reaches your home, while Xfinity is often the safer availability choice across more neighborhoods.
| ZIP | Neighborhoods | Coverage | Top speed | Rank score | Winner | |||
|---|---|---|---|---|---|---|---|---|
| AT&T | Xfinity | AT&T | Xfinity | AT&T | Xfinity | |||
| 33157 | Cutler Bay, Palmetto Bay, Perrine | 84% | 100% | 5 Gig | 2 Gig | 79 | 79 | Xfinity |
| 33147 | Brownsville, West Little River, Gladeview | 74% | 100% | 5 Gig | 2 Gig | 70 | 79 | Xfinity |
| 33142 | Allapattah, Liberty City, Brownsville | 57% | 100% | 5 Gig | 2 Gig | 54 | 79 | Xfinity |
| 33170 | Goulds, Princeton, Naranja | 62% | 95% | 5 Gig | 2 Gig | 58 | 75 | Xfinity |
| 33155 | Westchester, Coral Terrace, Glenvar Heights | 93% | 100% | 5 Gig | 2 Gig | 88 | 79 | AT&T |
| 33165 | Westchester, Tamiami, Coral Way | 91% | 100% | 5 Gig | 2 Gig | 86 | 79 | AT&T |
| 33156 | Pinecrest, Kendall, Palmetto Bay | 71% | 100% | 5 Gig | 2 Gig | 67 | 79 | Xfinity |
| 33186 | Kendall, The Hammocks, Kendale Lakes, Country Walk | 78% | 100% | 5 Gig | 2 Gig | 73 | 79 | Xfinity |
| 33161 | North Miami, Biscayne Gardens, Keystone Point | 67% | 100% | 5 Gig | 2 Gig | 63 | 79 | Xfinity |
| 33150 | Little Haiti, Liberty City, Model City | 59% | 100% | 5 Gig | 2 Gig | 56 | 79 | Xfinity |
| 33176 | Kendall, Palmetto Bay, Pinecrest, The Falls | 71% | 100% | 5 Gig | 2 Gig | 67 | 79 | Xfinity |
| 33175 | Tamiami, Sweetwater, Kendall West, Coral Estates | 81% | 100% | 5 Gig | 2 Gig | 77 | 79 | Xfinity |
| 33196 | The Hammocks, Kendall West, Three Lakes | 69% | 88% | 5 Gig | 2 Gig | 65 | 70 | Xfinity |
| 33143 | South Miami, Glenvar Heights, Pinecrest (edge) | 78% | 100% | 5 Gig | 2 Gig | 73 | 79 | Xfinity |
| 33127 | Wynwood, Little Haiti, Buena Vista | 61% | 100% | 5 Gig | 2 Gig | 58 | 79 | Xfinity |
| 33177 | Richmond Heights, South Miami Heights, Cutler Bay, Goulds | 79% | 99% | 5 Gig | 2 Gig | 74 | 79 | Xfinity |
| 33179 | Ojus, North Miami Beach, Highland Lakes, Skylake | 82% | 100% | 5 Gig | 2 Gig | 77 | 79 | Xfinity |
| 33187 | Redland, South Miami Heights, Goulds | 55% | 79% | 5 Gig | 2 Gig | 51 | 63 | Xfinity |
| 33169 | Norland, Scott Lake, Andover | 89% | 100% | 5 Gig | 2 Gig | 83 | 79 | AT&T |
| 33134 | Coral Gables, Coral Way, Douglas Park | 84% | 100% | 5 Gig | 2 Gig | 79 | 79 | Xfinity |
| 33162 | North Miami Beach, Sky Lake, Uleta | 74% | 100% | 5 Gig | 2 Gig | 70 | 79 | Xfinity |
| 33178 | Doral, Airport West, Country Club of Miami, Koger | 70% | 90% | 5 Gig | 2 Gig | 66 | 71 | Xfinity |
| 33168 | North Miami, Pinewood, Biscayne Gardens | 91% | 100% | 5 Gig | 2 Gig | 86 | 79 | AT&T |
| 33133 | Coconut Grove, Coral Gables (edge), The Roads | 92% | 100% | 5 Gig | 2 Gig | 86 | 79 | AT&T |
| 33166 | Miami Springs, Doral, Virginia Gardens | 80% | 100% | 5 Gig | 2 Gig | 75 | 79 | Xfinity |
| 33135 | Little Havana, West Flagler, Shenandoah | 74% | 100% | 5 Gig | 2 Gig | 69 | 79 | Xfinity |
| 33167 | Miami Shores, West Little River, Pinewood | 86% | 100% | 5 Gig | 2 Gig | 81 | 79 | AT&T |
| 33189 | Cutler Bay, Goulds, Lakes by the Bay | 88% | 96% | 5 Gig | 2 Gig | 82 | 76 | AT&T |
| 33125 | Allapattah, East Little Havana, Grapeland Heights | 67% | 100% | 5 Gig | 2 Gig | 63 | 79 | Xfinity |
| 33138 | Miami Shores (edge), El Portal, Little River | 57% | 99% | 5 Gig | 2 Gig | 54 | 79 | Xfinity |
| 33146 | Coral Gables, South Miami, University of Miami | 87% | 100% | 5 Gig | 2 Gig | 82 | 79 | AT&T |
| 33144 | Westchester, Fontainebleau, Coral Terrace | 91% | 100% | 5 Gig | 2 Gig | 86 | 79 | AT&T |
| 33145 | Shenandoah, Silver Bluff, The Roads | 97% | 100% | 5 Gig | 2 Gig | 91 | 79 | AT&T |
| 33126 | Fontainebleau, Grapeland Heights, West Flagler | 65% | 98% | 5 Gig | 2 Gig | 61 | 78 | Xfinity |
| 33185 | Kendall West, The Hammocks, Tamiami, Country Walk | 95% | 100% | 5 Gig | 2 Gig | 90 | 79 | AT&T |
| 33173 | Kendall, Olympia Heights, Sunset, Winston Park | 80% | 100% | 5 Gig | 2 Gig | 75 | 79 | Xfinity |
| 33183 | Kendall, The Crossings, Kendale Lakes, Sunset West | 58% | 100% | 5 Gig | 2 Gig | 55 | 79 | Xfinity |
| 33137 | Edgewater, Buena Vista, Little Haiti | 38% | 100% | 5 Gig | 2 Gig | 36 | 79 | Xfinity |
| 33130 | Little Havana, East Little Havana, Downtown Miami | 45% | 100% | 5 Gig | 2 Gig | 42 | 79 | Xfinity |
| 33136 | Overtown, Health District, Lummus Park | 27% | 100% | 5 Gig | 2 Gig | 25 | 79 | Xfinity |
| 33195 | West Kendall, Tamiami | 71% | 99% | 5 Gig | 2 Gig | 66 | 78 | Xfinity |
| 33174 | Fontainebleau, Tamiami, Sweetwater, University Park | 82% | 100% | 5 Gig | 2 Gig | 77 | 79 | Xfinity |
| 33184 | Tamiami, Sweetwater, Fontainebleau, University Park | 75% | 100% | 5 Gig | 2 Gig | 70 | 79 | Xfinity |
| 33122 | Airport West, Doral, Blue Lagoon | 69% | 99% | 5 Gig | 2 Gig | 65 | 78 | Xfinity |
| 33193 | Kendall West, The Crossings, Country Walk | 77% | 100% | 5 Gig | 2 Gig | 72 | 79 | Xfinity |
| 33129 | Brickell, The Roads, Point View | 84% | 99% | 5 Gig | 2 Gig | 79 | 79 | Xfinity |
| 33181 | North Miami, Keystone Point, Biscayne Gardens, San Souci Estates | 68% | 98% | 5 Gig | 2 Gig | 63 | 78 | Xfinity |
| 33180 | Aventura, Ojus, Sunny Isles Beach, Highland Oaks | 60% | 99% | 5 Gig | 2 Gig | 56 | 79 | Xfinity |
| 33172 | Doral, Fontainebleau, Airport West, Waterford | 58% | 97% | 5 Gig | 2 Gig | 54 | 77 | Xfinity |
| 33190 | Cutler Bay, Lakes by the Bay, Saga Bay | 80% | 100% | 5 Gig | 2 Gig | 76 | 79 | Xfinity |
| 33194 | West Kendall, Fontainebleau, Tamiami | 98% | 99% | 5 Gig | 2 Gig | 92 | 79 | AT&T |
| 33256 | Kendall, Pinecrest | 84% | 100% | 5 Gig | 2 Gig | 79 | 79 | Xfinity |
| 33182 | Tamiami, Fontainebleau, Airport West | 88% | 99% | 5 Gig | 2 Gig | 82 | 79 | AT&T |
| 33128 | Downtown Miami, Government Center, Little Havana | 25% | 100% | 5 Gig | 2 Gig | 24 | 79 | Xfinity |
| 33158 | Pinecrest, Palmetto Bay | 64% | 99% | 5 Gig | 2 Gig | 61 | 79 | Xfinity |
| 33132 | Downtown Miami, Park West, Watson Island | 18% | 95% | 5 Gig | 2 Gig | 17 | 75 | Xfinity |
| 33222 | Westchester, Fontainebleau | 71% | 99% | 5 Gig | 2 Gig | 66 | 78 | Xfinity |
| 33153 | Little River, El Portal | 78% | 99% | 5 Gig | 2 Gig | 73 | 79 | Xfinity |
| 33164 | North Miami Beach, Ojus | 76% | 100% | 5 Gig | 2 Gig | 72 | 79 | Xfinity |
| 33234 | Coral Gables, South Miami | 62% | 100% | 5 Gig | 2 Gig | 58 | 79 | Xfinity |
| 33257 | Cutler Bay, Palmetto Bay | 88% | 100% | 5 Gig | 2 Gig | 83 | 79 | AT&T |
| 33247 | Liberty City, Gladeview | 49% | 100% | 5 Gig | 2 Gig | 46 | 79 | Xfinity |
| 33152 | Miami International Airport, Doral (P.O. Boxes) | 56% | 99% | 5 Gig | 2 Gig | 53 | 78 | Xfinity |
| 33266 | Doral, Miami International Airport | 78% | 100% | 5 Gig | 2 Gig | 74 | 79 | Xfinity |
| 33269 | Norland, Carol City, Miami Gardens | 99% | 100% | 5 Gig | 2 Gig | 93 | 79 | AT&T |
| 33243 | South Miami, Glenvar Heights | 77% | 98% | 5 Gig | 2 Gig | 72 | 78 | Xfinity |
| 33163 | Ives Estates, North Miami Beach | 78% | 100% | 5 Gig | 2 Gig | 73 | 79 | Xfinity |
| 33131 | Brickell, Downtown Miami, Claughton Island (Brickell Key) | 25% | 100% | 5 Gig | 2 Gig | 23 | 79 | Xfinity |
| 33238 | Little Haiti, Lemon City | 26% | 100% | 5 Gig | 2 Gig | 25 | 79 | Xfinity |
Rank score (0–100) is each provider’s Speed Score, discounted for weak upload, times the share of that ZIP it reaches — the same rule that orders providers on the Miami city page, so it moves as availability changes street to street.
Which is better for…
The right pick comes down to what you actually do online.
Get connected
Pick your provider and check availability at your address.
- 5 Gig down · 5 Gig up Fiber
- 1 Gig down · 1 Gig up Fiber
- 100 Mbps down · 20 Mbps up Copper
- 2 Gig down · 300 Mbps up Cable
- 1 Gig down · 35 Mbps up Cable
See what’s actually available at your address
Coverage changes from one street to the next. Check your exact address in seconds.
Check my addressFrequently asked questions
Does AT&T or Xfinity reach my Miami address?
Xfinity reaches about 98% of Miami overall, while AT&T reaches about 96% across all its technologies. Check both providers with your exact address because neighborhood and block-level availability can differ.
Which is cheaper, AT&T or Xfinity, and what will I actually pay?
AT&T starts at $35/mo, compared with Xfinity at $40/mo. Those are promotional starting rates, so confirm the post-promo rate, equipment fees, and any contract before signing.
Which is faster for gaming, working from home, or 4K streaming?
AT&T’s 5,000/5,000 Mbps tier reaches about 60% of the city, while Xfinity’s 2,000/300 Mbps tier reaches about 72%. AT&T is faster where it reaches your address, but check availability before choosing it.