Tech
Can You Still Use an Old Phone in 2026? What You Need to Know
An old phone can still work in 2026, but age alone does not determine whether a carrier will activate it. A hand-me-down smartphone from several years ago may work perfectly, while an older 4G phone can fail because it lacks the right voice support or carrier compatibility.
Four checks matter most: the phone needs current network support, VoLTE, a compatible IMEI result, and an unlocked status. Software support matters too, especially if you’ll still use the phone for apps, payments, email, or other sensitive tasks.
T-Mobile’s current BYOD guidance recommends checking the IMEI, the phone’s unique device identifier, and unlock status before activation. Its compatibility tool can return fully compatible, partially compatible, incompatible, or blocked.
2G and 3G phones are effectively out
The major US networks have moved beyond the technologies many older phones were built around.
T-Mobile’s Network Evolution page says its 2G GSM network was retired on August 3, 2026. Its 3G UMTS network was retired in July 2022, following the shutdowns of Sprint’s 3G CDMA and LTE networks earlier that year.
AT&T phased out 3G in February 2022. Verizon completed the retirement of its 3G CDMA network at the end of 2022 and says 4G devices without VoLTE also lost calling, texting, and data service.
That means a 2G- or 3G-only phone is no longer a practical option on the major US networks. A 4G label alone is not enough either. The phone still needs VoLTE and carrier support.
Run these four checks before activating an old phone
| Check | Pass | Warning or failure |
|---|---|---|
| Network | Supports the carrier’s LTE or 5G bands | 2G/3G-only or missing important bands |
| Voice | Supports VoLTE on the destination carrier | LTE data works, but voice support is missing |
| IMEI | Carrier reports fully compatible | Partial, incompatible, or blocked |
| Unlock | Device is unlocked | Still locked to another carrier |
Network support depends on the exact model. Phones sold for different carriers or countries can support different frequency bands, so an imported phone may connect to LTE while still missing bands needed for reliable US coverage.
VoLTE, or Voice over LTE, is just as important. A phone can support LTE data without supporting the carrier’s LTE voice service. Verizon’s shutdown guidance specifically says 4G non-VoLTE devices are no longer supported.
Run the IMEI through the destination carrier’s compatibility checker rather than relying only on the specifications. A fully compatible result is the safest sign that activation should work, while a partial or incompatible result deserves a closer look before buying a SIM or switching service.
The phone also needs to be unlocked if it is moving to another carrier. Unlock requirements vary, but carriers commonly require eligible devices to be paid off and in good standing.
Software longevity belongs in the decision too. Recent Samsung and Google phones now receive much longer software support windows, while older models may already have stopped receiving security updates.
A new SIM cannot fix an incompatible phone
Once the phone passes those checks, activation itself is usually straightforward.
A compatible device can use either a physical SIM or eSIM if the phone and carrier support it. Changing the SIM type cannot add missing LTE bands, VoLTE support, or carrier approval.
T-Mobile says many smartphones released since 2020 support eSIM, although availability varies by model and region. With eSIM, activation can often complete within minutes.
After activation, test voice calls, texts, and mobile data. If data or MMS does not work, check the APN settings. Some older and imported devices may require manual configuration.
If you’re transferring an existing phone number, keep the old service active until the port finishes. T-Mobile says number transfers can take from a few minutes to several hours.
A phone can connect and still be too old to use safely
Carrier compatibility is only one part of keeping an old phone useful.
Older devices may no longer receive security patches or current app versions. More than a billion older Android devices were estimated to be outside Google’s current security-update coverage earlier this year, making unsupported Android phones a separate concern from whether they can connect to a cellular network.
Apps can impose their own cutoffs too. WhatsApp, for example, is ending Android 5 support in September 2026.
Before putting an old phone back into regular use, check whether it still receives security updates and whether the apps you rely on still support its operating system.
If the phone supports the carrier’s LTE bands and VoLTE, passes the IMEI check, is unlocked when necessary, and still receives acceptable software support, it can remain perfectly usable in 2026. If one of those checks fails, a new SIM is unlikely to rescue it.
Also read: If replacement is unavoidable, our guide to the most repairable phones in 2026 compares current models by repairability, parts access, and software support.
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Tech
Rivian’s CFO is leaving the company
Rivian’s chief financial officer Claire McDonough is resigning her position at the end of October, the company announced in a regulatory filing Thursday.
The company said McDonough is stepping down to “pursue a new opportunity and relocate to the East Coast to be closer to her family.” Rivian said her resignation is “not the result of any disagreement.” The company is already searching for a replacement, and vice president of finance Derek Mulvey will serve as interim CFO once McDonough leaves her post.
Her departure comes as Rivian takes on some of its biggest projects to date, including scaling up production and sales of its R2 SUV, which started shipping to customers this summer.
This story is developing…
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Tech
Bluesky adds an ‘algorithmic opt-out’ feature for those who don’t want to go viral
After adding support for longer videos just yesterday, open social network Bluesky on Thursday introduced a new algorithmic opt-out feature that allows users to stop their posts from appearing in the app’s main Discover feed.
That algorithmic feed can currently surface any post on Bluesky’s network, as posts on the network are public by default.
To be clear, this latest change isn’t a way to make posts private — Bluesky is still working on rolling out support for private data at the protocol level. Instead, the feature simply makes a user’s public posts less discoverable to people outside their existing personal network.
The company says it created the feature because not everyone using its social media site wants to go viral. Sometimes, people just want to post for their followers without having their words exposed to larger crowds.
To opt out of having posts shown in the Discover feed, users can toggle on a new option in the app’s Privacy and Security settings. The change can take up to an hour to fully take effect, the company says.

It’s also worth noting that Bluesky’s implementation of the feature extends beyond its own app.
Instead of just being a setting that applies only within Bluesky, the preference is recorded at the account level. That means the choice travels with the user, even if they’re posting from another app that is powered by the same underlying protocol that Bluesky uses, AT Proto.
However, while those other apps have access to this information, they still have to choose to whether to respect it.
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Tech
Buried in Meta’s $18B settlement is a legal pass on kids’ data
In addition to paying out up to $18 billion and adding child safety measures, Meta’s settlement agreement with attorneys general from 29 states includes an interesting provision: the states have agreed not to sue Meta under existing child safety laws over its retention and use of children’s data.
That permission is being granted for the limited purpose of training and testing Meta’s age-assurance model and includes guardrails, but it’s a curious policy decision to make in a case centered on child safety, and one that could be difficult to properly enforce.
As specified in the settlement agreement, Meta must develop, train, and begin testing a model designed to detect which users on Meta’s platforms are under the age of 13. This must be done within a year of the document’s effective date. (While the agreement doesn’t specify that the model has to be AI-based, Meta’s current age-detection tools are powered by AI technology.)
Under U.S. child safety law, COPPA (the Children’s Online Privacy Protection Act), typically requires that websites and apps limit the collection and retention of children’s personal information. Meta’s settlement agreement says that Meta shouldn’t need to violate COPPA to train or implement its age-assurance models. However, the agreement also says that the state AGs have agreed “fully, finally, and forever” not to bring any past, present or future COPPA claims — or claims under similar state laws — related to Meta’s use of children’s data.
The agreement makes clear that Meta can’t use data from users under age 13 for ad targeting, marketing, or algorithmic optimization.
Meta’s request for legal protection, and the state AGs’ willingness to grant it, isn’t unreasonable, says Philip N. Yannella, a partner at law firm Blank Rome and co-chair of its Privacy, Security & Data Protection practice. “These kinds of data minimization guardrails are pretty typical for privacy compliance: e.g., verifying compliance with deletion requests,” he said, though he noted a caveat: COPPA is a federal law primarily enforced by the FTC, not the states, so it’s unclear whether the FTC, which isn’t a party to this settlement, has separately agreed to the same compromise.
It can be difficult for companies to keep data technically and organizationally isolated from the rest of their systems. Yet Meta is being asked to do just that — to isolate its understanding of children’s behavior signals and other data and use it solely for detecting and removing under-13 users. Fortunately, an independent auditor will be involved in monitoring Meta’s compliance with the settlement so we don’t only have to rely on Meta’s word.
Policing this limitation could be complicated. The data could hypothetically feed into other Meta systems over time, or could raise questions over whether the data, signals, or insights derived from it are being used elsewhere within the company. What’s not clear from the agreement is what data Meta will retain for training the model, how much behavioral information that may include, or how long it will retain the data. We also don’t know how these models will change in the future as Meta meets the settlement’s terms.
Barring state AGs from raising COPPA or similar state-law claims over this use of children’s data in the future could complicate the legal avenues states can pursue if questions arise around how Meta is using the data.
That doesn’t prevent them from pursuing legal claims, notes Joshua Wurtzel, a partner at Schlam Stone & Dolan LLP. “If Meta uses the data outside those lines, the release and covenant not to sue don’t apply,” he said. But those legal disputes could still be complicated, since they’d hinge on whether Meta’s use of the data fell within the settlement’s terms.
Peter Jackson, a Data & IP attorney at Greenberg Glusker LLP, agrees, saying the carve-out here could “disincentivize future enforcement actions.”
“The Settlement Agreement’s age-assurance measures bear all the hallmarks of a heavy, and perhaps hasty, negotiation,” he says.
The decision also touches on a broader question that’s been coming up across the AI industry lately, especially as more AI agents are being developed to help consumers with various tasks. The systems often require significant access to users’ personal data to work well. Similarly, Meta may need deep insight into children’s use of social media use in order to identify which accounts belong to young people.
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