Can you use a Sprint phone today? Often yes, but never on Sprint. T-Mobile switched both Sprint networks off in 2022, so an old Sprint phone only works if another network accepts it. Whether it does comes down to two things: the phone is unlocked, and the new carrier’s checker says it is compatible.
Everything below was read from each company’s own pages on October 9, 2026.
Why a Sprint phone cannot use Sprint
There is no Sprint network left. T-Mobile’s network evolution page gives the dates.
| Network | What T-Mobile says |
|---|---|
| Sprint 3G, which used CDMA | “As of March 31, 2022, Sprint’s older 3G (CDMA) network has been retired.” |
| Sprint LTE | “As of June 30, 2022, Sprint’s LTE network has been retired.” |
The same page warns about age in general. Phones “typically introduced in 2017 or earlier, may still support voice calls and basic texting but could experience service disruptions”.
Using a Sprint phone on T-Mobile
This is the likeliest fit, since Sprint’s customers went there. A T-Mobile page for business accounts says: “Most Sprint devices, including handsets and non-handsets, are compatible with T-Mobile’s network and can continue to be used if you replace your Sprint SIM with a FREE T-Mobile SIM card. However, some devices are not compatible with T-Mobile’s network and must be replaced”.
For your own phone, use the checker on T-Mobile’s bring your own phone page: “Enter your IMEI into the checker below to quickly see if your phone is compatible with the T-Mobile network”.
Using a Sprint phone on another carrier
No carrier’s page mentions Sprint phones by name. Each gives a general rule, and each has a checker.
| Carrier | What its bring-your-own-phone page says |
|---|---|
| Verizon | “Make sure your device is unlocked from your previous carrier.” The SIM “must also be compatible with the Verizon mobile network.” |
| AT&T | “your phone must be GSM-compatible. CDMA phones will not work.” |
| Boost Mobile | “enter your IMEI number in the field below to see if your phone is compatible with Boost”, and “make sure it’s unlocked by your current carrier.” |
| Mint Mobile | “you can definitely bring your current phone to Mint Mobile as long as it’s unlocked and compatible.” |
| US Mobile | “Any unlocked phone or device that has a SIM card slot or is eSIM capable will most likely work with our services.” |
AT&T’s line matters for older Sprint phones. Sprint’s 3G network was CDMA, and AT&T says CDMA phones will not work. AT&T’s page does not say more about Sprint phones than that, so use its checker for a newer one.
US Cellular is no longer an option. Its wireless business now belongs to T-Mobile.
How to find your IMEI
The IMEI is the number a compatibility checker asks for. Mint Mobile’s help page notes it “can be found by dialing *#06#”.
The phone has to be unlocked
A phone bought from Sprint was probably locked to it. The FCC puts it this way: “Unless a phone, or other wireless device, is specifically sold as “unlocked” at the point of purchase, it is probably locked to a specific wireless provider’s network.”
Unlocking should not cost anything. The FCC says participating carriers “agreed not to charge existing or former customers additional fees to unlock a device if it is eligible to be unlocked.”
Who unlocks a Sprint phone now is less clear. T-Mobile’s unlock policy does not mention Sprint. It says “The device must be sold by T-Mobile”, and for other phones, “you need to contact the mobile carrier or manufacturer who sold you the device.” Sprint is part of T-Mobile, so T-Mobile is the place to ask, but we found no page where it says how Sprint-bought phones are handled.
More on waiting periods is in our unlocking guide.
Questions
Can a Sprint phone be used on Boost Mobile?
Boost’s page does not say. Boost was a Sprint brand once, but it now runs mainly on AT&T’s towers, so do not assume. Put the IMEI into Boost’s checker.
Does a Sprint SIM card still work?
No Sprint network remains for it to connect to. T-Mobile’s page for business accounts says the Sprint SIM has to be replaced with a T-Mobile one.
What settings does a former Sprint phone need?
They are on our Sprint APN settings page.
The story of the merger is on our main Sprint page.