Sorry for my noob question. So I recently purchased an Xperia Z2 in Mexico (Sony Store). They said that the handset is unlocked (which is true) but it still has carrier bloatware and logos (Telcel). I really want to remove that (apps, skins and logos), so my question is: Do I have to root the phone or just install another firmware? I'm really noob to this.
Thanks in advance.
*Edit: I can use different SIM cards on it.