Google Fi.  It's a combo of TMobile and Sprint.  $20/mo for unlimited talk & text.  Add $10 per month per gig of data used.  Use more or use less and a pro-rated amount gets added or subtracted from your bill ($1/mb and down to the cents/bytes).

Verizon is best in San Diego.

I fired AT&T in 2005, they've never recovered. 

Verizon and very happy with it. 

Verizon seems to be behaving themselves

Verizon

Verizon.  Best coverage in our area.

Bell Canada, what else?

Sprint unlimited 3 things.

Verizon

T-Mobile for my smartphone.

ATT for my mobile hotspot.

Verizon for wife's dumb phone.

Century Link for landline internet.

Verizon!

Verizon... for umpteen years.

Verizon. It's good the majority of the time, however we have trouble with a signal when working at home at different times of the day.

Have had T-Mobile for the entire time I have had my cell.

Sprint

Verizon

Verizon and almost never a call dropped.

I switched to tmobile from att and did not notice any difference, but less $. 

Verizon. The most expensive carrier in my area. 

AT&T now.  I was with Verizon for years but the number of dropped calls was totally unacceptable.  I am very happy with them.  

AT&T. I have great coverage and rarely any problems. I get terrific corporate discounts too. 

I've tried several carriers but Verizon seems to work best in my area of CA.

Verizon.  They bought the first company we were with, and we are happy about it. A

Will Hamm Verizon, it seems to have the best coverage in my area.

AT&T does it for me!

Verizon.

Verizon

I have had Sprint for 10 years

Verizon which is common in this area, then ATT seems to be 2nd most popular.

It depends on the area.

Verizon.

Boost baby - cheap and works like a charm!

I lowered my phone bill from $300 a month to $35! which gives me a lot more money to funnel into my business

I have ATT, but would love to switch to Verizon for better coverage and service.

I got on a great plan back when our company was still Alltel, and so far nobody offers this price with unlimited data and a hotspot.

So I am sticking with this plan despite ATT's best efforts to get me to switch.

Verizon

AT&T until December than I'm going with Verizon.

Thinking of switching.

Currently T-Mobile.  

AT&T. We have been with them since our first cell phones in the early 90's (but they weren't called AT&T then).

They have the best coverage in our area.

Will Hamm - after almost 15 years with AT&T, when they started discouraging 2-year contract prices for new phones,  I decided to subscribe to T-Mobile and glad I did that.

T-Mobile.  I really like them.

I've had them all and settled on verizon.

Verizon, for a number of years. Had T-Mobile way in the past as a Blackberry user but that needed to change, for a number of reasons

AT&T

I've been with Verizon for years...

Verizon, I love the reliability but I hate the CUSTOMER SERVICE!

ATT 

Rogers Wireless.  They are Canadian but partner with At&t in the usa

Just switched to T-Mobile and cut my bill in half !

My SmartPhone is through Verizon Will Hamm. 

Veri

Verizon, but I'd switch if another carrier worked at my home.