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taleefoonka 18.9K Views
May 2, 2026 4:03 AM

$400 Virtual Prepaid Mastercard when you switch to T-mobile

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Apparently, T-Mobile's recent greedy and anti-Un-carrier policies, along with moves from other carriers, have forced them to run another ( more numbers game). This time, the $400 is not a combination of Costco and T-Mobile rebates, instead, it is a single $300 or $400 virtual prepaid card from T-Mobile when you port your number over from the competition.

The Essentials plan ($100 plus taxes) will give you $300 per line. The 4-line plan for $170 will give you $400 per line for up to 4 lines, that is essentially 8 to 9 months of free service. And if you are able to snag an Insider Discount, it's an even better deal.

This deal also also stacks with the Keep & Switch promo. This is T-Mobile's standard switching promo that offers up to $800 back via rebate card to offset paying off your existing phone from your previous carrier.
​
This promo came last night, and as of right now, it seems Costco is still running its separate promotion. I am not sure if someone can get this T-Mobile promotion plus the $250 of the costco cash card, which would have made this deal a killer deal, but as of right now, it is not the case.

https://www.t-mobile.com/cell-pho...F83A546511
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About the Poster
Apparently, T-Mobile's recent greedy and anti-Un-carrier policies, along with moves from other carriers, have forced them to run another ( more numbers game). This time, the $400 is not a combination of Costco and T-Mobile rebates, instead, it is a single $300 or $400 virtual prepaid card from T-Mobile when you port your number over from the competition.

The Essentials plan ($100 plus taxes) will give you $300 per line. The 4-line plan for $170 will give you $400 per line for up to 4 lines, that is essentially 8 to 9 months of free service. And if you are able to snag an Insider Discount, it's an even better deal.

This deal also also stacks with the Keep & Switch promo. This is T-Mobile's standard switching promo that offers up to $800 back via rebate card to offset paying off your existing phone from your previous carrier.
​
This promo came last night, and as of right now, it seems Costco is still running its separate promotion. I am not sure if someone can get this T-Mobile promotion plus the $250 of the costco cash card, which would have made this deal a killer deal, but as of right now, it is not the case.

https://www.t-mobile.com/cell-pho...F83A546511

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56 Comments

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Jun 3, 2026 8:23 AM
701 Comments
Joined Dec 2012
ericliujianJun 3, 2026 8:23 AM
701 Comments
Anyone really got the rebate? Have to pay 2nd month now
Jun 4, 2026 1:12 AM
1.3K Comments
Joined Mar 2012
unfrozenJun 4, 2026 1:12 AM
1.3K Comments
I just quit Consumer Cellular because their $21/month plan was costing me $250 a year with zero minutes per quarter. Literally, I did not even turn on the phone the last three or four months. And my activity for the last year was probably less than five minutes.

So will T-Mobile give me money for switching? I'm okay with free money! But I will draw the line at sending them any money.
2
Jun 9, 2026 4:36 AM
40 Comments
Joined Jul 2017
JJ1111Jun 9, 2026 4:36 AM
40 Comments
Maybe a dumb question -
Can you add new lines to the account before switching so I can port over 4 lines and qualify for the max rebates?
Does T-Mobile require the lines to have been active for a certain amount of time before porting in? And after receiving the BYOD rebates, is there a minimum amount of time I need to keep those lines active on T-Mobile to avoid losing the promo or having it clawed back?
Thanks!
Jun 18, 2026 4:03 PM
1.1K Comments
Joined May 2019
Impulse_shopperJun 18, 2026 4:03 PM
1.1K Comments
I switched from Verizon, got my phone payoff rebate within a week. Anyone know average time for the $400/line?
Jul 2, 2026 5:11 PM
261 Comments
Joined Mar 2018
oahortsaJul 2, 2026 5:11 PM
261 Comments
How hard is it to get a insider 20% discount code if I transport 4 tracfone lines to t-mobile?
Aug 16, 2026 2:48 AM
3K Comments
Joined Sep 2014
msp3Aug 16, 2026 2:48 AM
3K Comments
It's been about 3 months for me now and have gotten 2 $800 MasterCard gift cards (transferable to bank) for Keep & Switch, and 4 $400 Visa gift cards (not transferable to bank) for BYOD at Costco. On the T-Mobile rebates page it's still showing 4 $150 Costco cash cards as pending. Any risk of clawback if I go back to AT&T after final payout?
Aug 17, 2026 10:01 PM
479 Comments
Joined Jun 2009
ttllkkAug 17, 2026 10:01 PM
479 Comments
Quote from msp3 View quoted comment :
It's been about 3 months for me now and have gotten 2 $800 MasterCard gift cards (transferable to bank) for Keep & Switch, and 4 $400 Visa gift cards (not transferable to bank) for BYOD at Costco. On the T-Mobile rebates page it's still showing 4 $150 Costco cash cards as pending. Any risk of clawback if I go back to AT&T after final payout?
is the $400 promotion still going on? There is a offer of up to $400 BYOD currently on T-mobile.com. Is it the same? I would like to see if I can combine keep and switch with it.

Also, according to T-mobile, Starting July 9, 2026, Keep and Switch is open only to brand-new customer accounts. I have a tmobile prepaid line and an old fathered tablet line, does it matter?
Last edited by ttllkk August 17, 2026 at 03:34 PM.

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Aug 18, 2026 7:52 AM
3K Comments
Joined Sep 2014
msp3Aug 18, 2026 7:52 AM
3K Comments
Quote from ttllkk View quoted comment :
is the $400 promotion still going on? There is a offer of up to $400 BYOD currently on T-mobile.com. Is it the same? I would like to see if I can combine keep and switch with it.
Quote from ttllkk View quoted comment :
Also, according to T-mobile, Starting July 9, 2026, Keep and Switch is open only to brand-new customer accounts. I have a tmobile prepaid line and an old fathered tablet line, does it matter?
Prepaids are not real customers, but your tablet line is probably a proper (postpaid) account and by definition an existing customer.
Aug 19, 2026 4:05 AM
479 Comments
Joined Jun 2009
ttllkkAug 19, 2026 4:05 AM
479 Comments
Quote from msp3 View quoted comment :
See https://www.costco.com/f/-/t-mobi...d-showcase

Prepaids are not real customers, but your tablet line is probably a proper (postpaid) account and by definition an existing customer.
The one on Costco now requires eligible device financing agreement. It seems not for BYOD.
Aug 27, 2026 12:11 PM
3.2K Comments
Joined Oct 2007
KingUltraAug 27, 2026 12:11 PM
3.2K Comments
Quote from msp3 View quoted comment :
It's been about 3 months for me now and have gotten 2 $800 MasterCard gift cards (transferable to bank) for Keep & Switch, and 4 $400 Visa gift cards (not transferable to bank) for BYOD at Costco. On the T-Mobile rebates page it's still showing 4 $150 Costco cash cards as pending. Any risk of clawback if I go back to AT&T after final payout?
Did you receive the $150 one ? My $400 shows Denied, and it now shows $150 one Approved, but no Gift card link yet. I called the Rebate center to complain, and the CSR says She will overwrite and approve the $400. Let's see if it updates within 7 days as she said.
Aug 28, 2026 8:25 AM
3K Comments
Joined Sep 2014
msp3Aug 28, 2026 8:25 AM
3K Comments
Quote from KingUltra View quoted comment :
Did you receive the $150 one ? My $400 shows Denied, and it now shows $150 one Approved, but no Gift card link yet. I called the Rebate center to complain, and the CSR says She will overwrite and approve the $400. Let's see if it updates within 7 days as she said.
In the rebate website the Costco shop cards says $150, but is actually $75/line as it says in the terms. For my $400s, 2 lines with eSIM were approved first, 2 lines with physical SIM were rejected but reprocessed properly. All cards come by text msg to whatever line you put when you filled out the rebate form.

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