SWT Mobile was a consumer phone brand that resold service on AT&T’s GSM and UMTS network. Wikipedia lists it among defunct US operators, with an end date of 2013. No other source we found describes the brand, its owner or how it closed, so details beyond that are unknown.
SWT Mobile is gone
Wikipedia lists SWT Mobile in its table of defunct, merged and acquired US operators. The row gives a Personal market, AT&T as host network, GSM and UMTS technology, and an end date of 2013. It gives no notes and no citation. We found no press release, carrier notice or news story that confirms the date or explains the closing.
If you had a SWT Mobile line
No source names a carrier that took over SWT Mobile customers. The brand ran on AT&T’s network. An old SWT Mobile number is most likely no longer active. Ask any current carrier whether the number can still be ported. If not, choose a new plan and a new number.
The 2013 end date comes from a single uncited Wikipedia row, and BestCellular.com found no second source for SWT Mobile.
How SWT Mobile ended
- 2013: SWT Mobile ends, per Wikipedia.
Why SWT Mobile ended
No source explains why SWT Mobile ended. The only record we found is a single row in Wikipedia’s list of defunct US operators. It names AT&T as the host network and 2013 as the end date. It gives no owner, launch date, plans or reason for the closing. BestCellular.com will add details if a dated source turns up.
How to find who holds an old number now
- Check an old bill or payment record. It names the company that billed you last.
- Run the number through a carrier lookup tool. It shows the carrier that holds the number today.
- Call that carrier and ask for the account number and transfer PIN.
- Start the port from the new carrier. Never cancel the old line first.
Your right to keep a number
Number portability is federal law, not a carrier policy. The rule is the FCC’s: Portability: Keeping Your Phone Number When Changing Service Providers.
How we verified SWT Mobile
BestCellular.com tracks active carriers and defunct ones. We keep both, because people still search for brands that no longer exist. Every fact on this page comes from the sources listed below, and we leave a detail out when no source states it. Where sources disagree, this page says so. If you can document a correction, tell us and we will check it against the sources.
Tracked and active are different counts on this site. SWT Mobile counts in our tracked total, not in our active total, so it does not appear in tools built for live carriers.
Questions about SWT Mobile
Is SWT Mobile still available?
No. Wikipedia lists SWT Mobile as a defunct operator with an end date of 2013. BestCellular.com found no current website, plans or support pages for the brand, and no sign that it still sells service.
Which network did SWT Mobile use?
SWT Mobile used AT&T’s network, with GSM and UMTS technology, per Wikipedia. It was a reseller brand, not a network owner. No other host network is named in any source we found.
What happened to SWT Mobile customers?
No source says where SWT Mobile customers went. No successor carrier was named. Former customers would have needed to move to another carrier and, where possible, port their number before service stopped.
Who owned SWT Mobile?
The sources we found do not name the company behind SWT Mobile. The Wikipedia row lists only the market, host network, technology and end date. BestCellular.com will update this answer if a dated source names the owner.
Sources
Checked October 14, 2026.
- Wikipedia: List of mobile virtual network operators in the United States: Lists SWT Mobile: Personal market, AT&T host, GSM and UMTS, end date 2013, no notes or citation (checked October 14, 2026).
Best Cellular. “SWT Mobile: What Happened,” BestCellular.com. https://bestcellular.com/swt-mobile/
Free to reuse with credit. Licence, sources and the full dataset. All defunct carriers are listed on carriers that shut down.