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Flex Mobile: 11 Things To Know Before You Sign Up

By
Stetson Doggett
|
Updated:
August 15, 2025
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Mint Mobile 15GB
1 Line
1 Line
T-Mobile
$
35
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15GB
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4K video streaming
Unlimited minutes
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1. What is Flex Mobile?

Flex Mobile is a prepaid cell phone carrier known as a mobile virtual network operator, or MVNO.

An MVNO is simply any cell phone carrier that does not operate its own cellular network.

Instead of building their own networks, MVNOs make agreements with the four big carriers to use their cellular networks for coverage.

In Flex Mobile’s case, it uses the T-Mobile network for coverage.

If you are curious to learn more about how the agreements work between the big carriers and the small carriers, check out my article on how some cell phone plans can cost so much less than others.

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2. What cell phone plans does Flex Mobile offer?

Flex Mobile offers the following cell phone plans to choose from:

Lines
Plan Duration
Discounts
Reset
Flex Basic
1 Line
1 Line
T-Mobile
$
16
/mo.
+tax
tax included
5GB
high-speed, then data stops

Deprioritized
No hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited
1 Line
1 Line
T-Mobile
$
29
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Basic
2 Lines
2 Lines
T-Mobile
$
32
/mo.
+tax
tax included
5GB
high-speed, then data stops

Deprioritized
No hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited Plus
1 Line
1 Line
T-Mobile
$
44
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
Int'l calling included
-
-
Full Details
Add to Compare
Added!
Flex Basic
3 Lines
3 Lines
T-Mobile
$
48
/mo.
+tax
tax included
5GB
high-speed, then data stops

Deprioritized
No hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited
2 Lines
2 Lines
T-Mobile
$
58
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Basic
4 Lines
4 Lines
T-Mobile
$
64
/mo.
+tax
tax included
5GB
high-speed, then data stops

Deprioritized
No hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Basic
5 Lines
5 Lines
T-Mobile
$
80
/mo.
+tax
tax included
5GB
high-speed, then data stops

Deprioritized
No hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited
3 Lines
3 Lines
T-Mobile
$
87
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited Plus
2 Lines
2 Lines
T-Mobile
$
88
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
Int'l calling included
-
-
Full Details
Add to Compare
Added!
Flex Unlimited
4 Lines
4 Lines
T-Mobile
$
116
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited Plus
3 Lines
3 Lines
T-Mobile
$
132
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
Int'l calling included
-
-
Full Details
Add to Compare
Added!
Flex Unlimited
5 Lines
5 Lines
T-Mobile
$
145
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
-
-
-
Full Details
Add to Compare
Added!
Flex Unlimited Plus
4 Lines
4 Lines
T-Mobile
$
176
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
Int'l calling included
-
-
Full Details
Add to Compare
Added!
Flex Unlimited Plus
5 Lines
5 Lines
T-Mobile
$
220
/mo.
+tax
tax included
35GB
high-speed, then 512Kbps

Deprioritized
Included hotspot
480p video streaming
Unlimited minutes
Unlimited texts
-
Int'l calling included
-
-
Full Details
Add to Compare
Added!

3. What deals, discounts, or referral programs does Flex Mobile have?

Flex Mobile does not offer any deals or discounts at this time.

4. Does Flex Mobile offer family plans?

Flex Mobile offers the following family plans to choose from:

No, Flex Mobile does not offer family plans. Each line needs its own separate account.

5. Does Flex Mobile have plans for tablets, smartwatches, or hotspot devices?

No, Flex Mobile does not offer plans for tablets, smartwatches, or hotspot devices.

6. How good is Flex Mobile's coverage?

Flex Mobile rides on the T-Mobile network for coverage, so reception in most places is pretty good.

See the full coverage details below:

AT&T coverage information

  • Total coverage: 78.1%
  • Total square miles covered: 2,602,364
  • Total population covered: 330 million people (99.0%)
  • 5G coverage: 43.3%
  • 5G square miles covered: 1,444,381
  • Population covered by 5G: 300 million people (90.0%)

The above information comes from the FCC and from AT&T.

You can check AT&T coverage by using third-party maps such as CoverageMap.com.

AT&T Coverage Map
AT&T Coverage Map displayed on CoverageMap.com

CoverageMap.com is building crowdsourced maps of the cellular networks.

Download the free Coverage Map app for iPhone or Android to compare coverage between carriers and see what network is best in your area.

Verizon coverage information

  • Total coverage: 67.4%
  • Total square miles covered: 2,246,127
  • Total population covered: 327 million people (98.0)%
  • 5G coverage: 14.5%
  • 5G square miles covered: 484,321
  • Population covered by 5G: 230 million people (69.0%)

The above data come from the FCC and from Verizon.

Check Verizon coverage in your area using maps such as CoverageMap.com.

Verizon coverage map
Verizon's coverage as shown on CoverageMap.com

CoverageMap.com is building crowdsourced maps of cellular coverage.

Download the free Coverage Map app for iPhone or Android to compare coverage between carriers and see what carrier has the best coverage in your area.

T-Mobile coverage information

  • Network: T-Mobile
  • Total coverage: 46.6%
  • Total square miles covered: 1,551,924
  • Total population covered: 330 million people (99.0%)
  • 5G coverage: 36.0%
  • 5G square miles covered: 1,200,851
  • Population covered by 5G: 326 million people (97.8%)

The above information comes from the FCC and from T-Mobile.

Check T-Mobile coverage in your area by using third-party maps such as CoverageMap.com.

T-Mobile coverage map
T-Mobile coverage map as shown on CoverageMap.com

CoverageMap.com is building crowdsourced maps of cellular coverage.

Download the free Coverage Map app for iPhone or Android to compare coverage and see what carrier is best in your area.

UScellular coverage information

  • Total coverage: 9.9%
  • Total square miles covered: 329,985
  • 5G coverage: 7.5%
  • 5G square miles covered: 250,946
  • Median download speed: 51.0 Mbps
  • Median upload speed: 15.2 Mbps

The above information comes from the FCC, Uscellular, and crowdsourced coverage data from CoverageMap.com.

Check UScellular coverage in your are by using third-party maps such as CoverageMap.com.

UScellular coverage map

CoverageMap.com is building crowdsourced maps of the cellular networks.

Download the free Coverage Map app for iPhone or Android to compare coverage between carriers and see what network is best in your area.

Dish Wireless coverage information

  • Network: Dish Wireless 5G Network (Boost Mobile native network)
  • Total coverage: 8.9%
  • Total square miles covered: 299,260
  • Total population covered: 210 million people (70%)

The above information comes from the FCC and from EchoStar.

Check Dish Wireless coverage in your area by using third-party maps such as CoverageMap.com.

Dish Wireless coverage map (Boost Mobile native network coverage)
Dish Wireless coverage map from CoverageMap.com

CoverageMap.com is building crowdsourced maps of cellular coverage.

Download the free Coverage Map app for iPhone or Android to compare coverage and see what carrier is best in your area.

7. What features does Flex Mobile support?

Flex Mobile supports:
  • VoLTE
  • WiFi calling
  • Visual voicemail
  • MMS (multimedia messaging service)
  • eSIM
  • Hotspot
  • Managing multiple lines from a single account
  • International calling
  • Canada and Mexico roaming

8. What phones work on Flex Mobile?

Most phones that are unlocked will work on Flex Mobile.

An unlocked phone is a phone that it is not tied to any carrier, contract, or financing agreement. You are free to use the phone on any plan or carrier you choose.

Consider contacting your current carrier to see if your phone is unlocked or what the steps are to get it unlocked.

9. Does Flex Mobile support international calling or data roaming?

Flex Mobile includes international calling on their Flex Unlimited Plus plan. Unfortunately, international calling is not available on their other plans.

Flex Mobile supports data roaming in Canada and Mexico but does not offer international roaming outside of North America.

10. What plan add-ons does Flex Mobile offer?

Flex Mobile does not offer any plan add-ons.

11. How do you contact Flex Mobile customer service?

You can reach Flex Mobile customer service by using the live chat feature on the Flex Mobile website or by calling (833) 711-9434.

Flex Mobile

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