On Sprint devives, even when you put in the SIM Card, it won't ask for the Unlock Code. It says Invalid SIM and wont let you use it at all. But I have found the way to Sim Unlock the HTC One Max for Sprint. It's really almost the same way as on the HTC One but with a few more steps. Step one is that you have to be Rooted. Unlock by code any HTC - OLD database. This service allows you to permanently unlock your HTC by code. We need only IMEI number of Your phone. SPECIAL Price 9.99 6.99 USDORDER First I tried to SIM unlock by paying but none of those codes were working, after I rooted my phone, followed some threads and tutorials but none of them worked. Any solution? HTC ONE M8 :-Android Version : 5.0.1-Phone is European ( I am located in Europe) Buy SIM Network Unlock PIN :- WhatsApp +91934981605For Educational and Informational Purposes Only. You Agree That I am Not Responsible for Your Earnings, Th @-viperboy-for the Sprint HTC One SIM Unlock Helper @O.M.J for the ruu @chas123 for the hacked file which makes unlock possible If you find this guide useful you can press the "Thanks" button or buy me a coffee:good: Insert a NON-ACCEPTED SIM card (from a different carrier) and switch on your HTC. If your handset prompt for you PIN : type your 4 digit SIM card PIN code (do not input the unlock code at this moment) Then your HTC will prompt a message like Network locked, SIM network unlock PIN. Type the 8 digit unlock code you have been provided by unlock Simply select your phone’s brand and model and then click “UNLOCK NOW!”. We include unlocks for virtually all well-known mobile phone brands including HTC, Sony, Apple, Samsung, BlackBerry, Nokia and Huawei. 2. Choose TrialPay Or PayPal. Buy it now safely & securely with PayPal at the world's most competitive prices get it completely free If you cannot restart the HTC One mini since it is blocked and the previous method does not work, we must proceed to turn it off and turn it on again using the physical buttons. To force a restart on your HTC press and hold the power button (or unlock button) for at least 8 seconds until the htc-one-mini or Android logo appears on the screen According to HTC: Because the Chinese version of the One is designed specifically for the smaller Chinese radio bands, we do have additional space inside the device we were able to use for the Get your HTC One Mini Device Unlocked today! Use it with any SIM card from any Network Worldwide! Easy and Safe Network Unlocking Service for your HTC One Mini Phone! 100% Guaranteed or your Money Back! lYZXH.