Here is how to get your Slate Mobile account number and transfer PIN, and what to do with them when you move your number to another carrier.
Account Number
Slate Mobile does not publish where your account number appears. Open the 24/7 chat on slate-mobile.com, or call (351) 300-0054 Monday to Friday, 10 AM to 8 PM Eastern, and ask for the account number on file.
Transfer PIN
Ask the same agent for a transfer PIN (also called a number transfer PIN). Slate explains what a new customer needs to bring a number in, but publishes no self-service path for issuing a PIN to a customer who is leaving.
Which network Slate Mobile uses
Slate says it runs on “America’s best 5G network” and does not name it. Its network-management disclosure, dated June 1, 2026, says only that service is delivered over “a facilities-based provider’s mobile network.” We do not guess, so this page records the network as not published and the chart below counts Slate in the not-recorded group.
Who runs Slate Mobile
The service is provided by That’s My Mobile; the terms of service name the company as Tube Incorporated, doing business as That’s My Mobile. Slate sells three prepaid plans as of October 11, 2026: Light (5 GB) at $20 a month, Solid (30 GB) at $30 and Unlimited (50 GB) at $40, taxes and fees extra. Service activates on eSIM in minutes or on a physical SIM, and the site has an IMEI checker for phones you bring.
Slate Mobile Contact Info
- Phone: (351) 300-0054, Monday to Friday 10 AM to 8 PM Eastern
- Chat: 24/7 on slate-mobile.com, automated outside phone hours
- Email: [email protected], replies within 24 hours per the site
- Website: slate-mobile.com
How to port your number away from Slate Mobile
- Keep the line active. Do not cancel Slate before the port completes, or the number can be lost.
- Get the account number and transfer PIN from Slate support by chat, phone or email.
- Give the new carrier the account number, the transfer PIN, the zip code on the Slate account and the account holder’s name exactly as Slate has it.
- Wait for the new SIM to activate. The Slate line ends once the number lands on the new carrier.
Why a Slate Mobile port gets rejected
The usual causes are a transfer PIN that was never issued, a name or zip code that does not match the Slate account, or a line that was cancelled before the port finished. Former Reach customers who never moved to Slate before August 18, 2026 may find the number already released; a carrier lookup shows who holds it now.
Sources
Slate Mobile, slate-mobile.com — plans, the number-transfer FAQ, the support contacts and the “provided by That’s My Mobile” footer, read October 11, 2026.
Slate Mobile, Network Management disclosure and Terms and Conditions (both dated June 1, 2026) — the facilities-based-provider wording and the Tube Incorporated d/b/a That’s My Mobile company name.
Reach Mobile, reachmobile.com — the “Reach Mobile is now Slate Mobile” notice and the August 18, 2026 service end date.
FCC, Portability: Keeping Your Phone Number When Changing Service Providers — the federal number-portability rules.
Sources read October 11, 2026.
Where Slate Mobile customers usually go next
Slate Mobile does not say which network carries your line, so check your IMEI against every carrier you consider before you switch.
Slate Mobile port-out questions
What network does Slate Mobile use?
Slate does not name it. The site says “America’s best 5G network” and the network disclosure says a facilities-based provider; neither names the carrier, so we record it as not published.
Where do I get the Slate Mobile account number and transfer PIN?
From Slate support: 24/7 chat on slate-mobile.com, (351) 300-0054 on weekdays 10 AM to 8 PM Eastern, or [email protected]. There is no self-service PIN page.
Is Slate Mobile the same as Reach Mobile?
Slate is where Reach Mobile customers were sent. reachmobile.com says Reach service ended August 18, 2026 and that Reach Mobile is now Slate Mobile; the service itself is provided by That’s My Mobile.
Can I keep my number if I leave Slate Mobile?
Yes. Federal rules require Slate to release it. Keep the line active, get the account number and transfer PIN, and start the port from the new carrier.
Does BestCellular.com list Slate Mobile as an active carrier?
Yes. Slate Mobile sells service today, so it counts toward the active total in our carrier dataset. Reach Mobile, the brand it replaced, is listed with the carriers that shut down.
Cite this page
Contacts, plans and company name confirmed on slate-mobile.com on October 11, 2026; the Reach Mobile hand-off confirmed on reachmobile.com the same day. Slate does not publish its host network or the account number location; where this page says to contact support, that is the gap, not a guess.
Best Cellular. “Slate Mobile Account Number & PIN: Accurate 2026,” BestCellular.com. https://bestcellular.com/slate-mobile/
Free to reuse with credit. Licence, sources and the full dataset.
Check Slate Mobile before you switch
Two free tools. No sign-up, nothing stored on our side.
Carriers that publish which network they use
Slate Mobile does not say which network carries your line. These carriers do, and each page names it, so you can compare coverage before you port.
See which network every US carrier uses · Open the transfer PIN lookup