Steve Kovach/Business Insider
T-Mobile was originally supposed to start selling the phone online today, but released a statement last night saying orders will be delayed until April 29.
In a statement, Sprint said it will not be able to make its April 27 in-store launch target, blaming "inventory challenges" from Samsung. It will only accept online orders at first, and did not say when to expect the phone in retail stores.
It's troubling news for Samsung too. The first round of reviews of the Galaxy S4 hit last night, and they were mostly lukewarm. Critics didn't like the phone's plastic construction and called many of its extra software features gimmicky.
AT&T is accepting pre-orders now starting at $199.99 and will have the phone in stores on May 27.
T-Mobile will sell the phone for $149.99 down plus $20 per month for 24 months. Sprint will sell the Galaxy S4 for $249.99.
Verizon will sell the phone for $199.99 with a two-year contract and a $50 online rebate. It will start accepting pre-orders April 25.
An earlier version of this story had different pricing and release dates for some carriers. Those carriers have since updated announced and/or updated the availability of the Galaxy S4. We've changed this story to accurately reflect the new information.