got mine in the mail today, tried the IMEI and sim and it worked, but at the end it told me to click on chat to finish activating.
through chat i got crap like this:
Lynn C.: Please contact the source of purchase and get a replacement phone with Sprint logo and that can be activated with Sprint services and we will activate it for you.
You: this is a sprint phone. you guys have it on your website. Please check with your supervisor there was information sent out about the nexus 5
Lynn C.: Edgar, yes, you are right, we are also offering this phone on our website and it is available for pre-order. Please note that as you have purchased this phone from Google Play Store they might have provided you a phone that is related to some other service provider like AT&T, Verizon. Please understand that each phone is related to some service provider and can only be activated with their services only.
Lynn C.: That's why I request you to contact them and get a phone related to Sprint services so that we can activate that on your account.
Lynn C.: If you wish, you can also contact our dedicated Technical Support Team at 1-888-211-4727 and they will help you with it.
You: there is only one version of this phone. This phone is sprint compatible.