Joined May 2004
L6: Expert
Forum Thread
Porting Number from Spectrum to T-Mobile... via Costco?
May 26, 2026 at
11:13 AM
Hi
I have a Spectrum (landline, I guess) number that I have had for 15+ years. But it is rarely used... and costs $30 a month.
My phone activity has moved to T-Mobile as people just call me on my mobile phone now.
I have a second T-Mobile line that I use rarely, mostly just for games. There's like five people total who know that number, lol. Its a free line, so no cost atm. If I can keep it, great... but would prefer to keep the Spectrum number.
I am also a Costco member. I got the free line via Costco T-Mobile. I think I got a $75 Costco Shop Card when I opened it, awesome!
Never ported a number before. Is it even possible to move a "landline" to a mobile platform? Anything to look out for? Any promos going on?
Though I do have an older (Sprint) plan that is often not eligible for promotions. I don't want to lose it... six lines (including the free one) for $125/month
THANKS for any help and suggestions
I have a Spectrum (landline, I guess) number that I have had for 15+ years. But it is rarely used... and costs $30 a month.
My phone activity has moved to T-Mobile as people just call me on my mobile phone now.
I have a second T-Mobile line that I use rarely, mostly just for games. There's like five people total who know that number, lol. Its a free line, so no cost atm. If I can keep it, great... but would prefer to keep the Spectrum number.
I am also a Costco member. I got the free line via Costco T-Mobile. I think I got a $75 Costco Shop Card when I opened it, awesome!
Never ported a number before. Is it even possible to move a "landline" to a mobile platform? Anything to look out for? Any promos going on?
Though I do have an older (Sprint) plan that is often not eligible for promotions. I don't want to lose it... six lines (including the free one) for $125/month
THANKS for any help and suggestions
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1. Spectrum Account Number (found on your bill).
2. Port out pin. Log in to the Spectrum Website, go to Services, select Mobile, choose the specific line, and click Get Transfer PIN.
Contact T-Mobile: Call T-Mobile customer service or visit Costco T-Mobile kiosk.
Tell them you want to port a landline number over to replace the phone number on your existing second line.
Give them the Spectrum account number, Transfer PIN, and address.
T-Mobile will submit the port request. Keep your Spectrum service active until T-Mobile confirms the transfer is complete.