SERO owners able to switch to EVO?
 

what is keeping us TP2 owners from using our SIM cards on the EVO or any other new device from Sprint that requires us upgrading from the SERO plan? I know T-Mobile and ATT users do it all the time. Just buy "unlocked" phones and switch SIM cards. Am I missing something?

Re: SERO owners able to switch to EVO?
 

Yes, you're missing a whole bunch. The Sprint TP2 and EVO are CDMA phones. The "service" is dependent on the ESN/MEID, not a SIM card.

Would you be offended if I used your question in my signature?

Re: SERO owners able to switch to EVO?
 

So someone from tmobile couldnt use a sprint tp2 that is SIM unlocked? no sir wouldnt be offended. I was just curious why we couldnt if i have heard of people just switching sim cards. i guess that would go both ways cant buy a mytouch and use it on sprint right?

Re: SERO owners able to switch to EVO?
 

Correct you could not use it on sprint. Sprint does not use Sim cards at all they are CDMA not GSM. I don't think the EVO even has a sim slot but someone correct me if I am wrong.

Re: SERO owners able to switch to EVO?
 

I believe that BY DEFAULT the SIM card and GSM roaming can only be used when out of the country. I might be wrong on this.

Re: SERO owners able to switch to EVO?
 

Right Sprint is CDMA but now with the TP2 and all the new phones they are comming out with both GSM/CDMA. One day,maybe, everyone will go to GSM and we wont be tied down to a certain "service provider" because of their phones. We will have a greater selection of phones. That being said what is the use of the SIM card on the tp2?

Ok if the SIM card can only be used out of the country why does it have an option to force GSM? This would be only for a CDMA/GSM capable phone what about one that is only GSM?

Re: SERO owners able to switch to EVO?
 

You can unlock the Sim on the Sprint to use in the US with the GSM carrier's so I have heard and seen around on the forums.

The Sim slot on the Sprint version was meant to make it a world phone so you could use it out of the country with a sim card.

Re: SERO owners able to switch to EVO?
 

Without paying $20 for the Sim Unlock, if you force GSM, in the US, you will never get a signal lock.

Re: SERO owners able to switch to EVO?
 

Most phones aren't actually GSM/CDMA, most phones are either one or the other. Like said above, I don't believe the EVO is a GSM/CDMA phone. Also it is HIGHLY unlikely (it won't happen) that everyone will go GSM, because as said before, Sprint (and Verizon) are CDMA. Switching to GSM is not easy, it would require them to put up new GSM towers and get all new phones. They would never go through that much hassle just so there customers could use any phone from any service provider, they would not like people to be able to do this. Since Sprint is a CDMA service provider, that is why you can't use GSM phones. Sprint only put this GSM feature on certain phones, so you could use the phone in other countries, but just because it has the feature of a SIM slot on this phone, Sprint is still CDMA and use's ESN's to identify their phones. By switching the SIM card, the Touch Pro 2 would still be activated on your Sprint account.



Like mentioned the SIM card is on the Touch Pro 2 to make it a world phone, because, I believe, most other countries use GSM. Also on the Touch Pro 2 it is possible to "unlock" the phone, then being able to use it on other GSM service providers, but Sprint and Verizon did not mean for this to happen.

Re: SERO owners able to switch to EVO?
 

not only no signal lock, even if you do sim unlock, you dont get 3g data from using a domestic sim card in a tp2.

Re: SERO owners able to switch to EVO?
 

Wasn't trying to force the tp2 to gsm just wondering if I could take the SIM and use it on a gsm only phone.

I know that most phones aren't GSM/CDMA i was mainly referring to "Sprint" since I have their service. If the EVO is not a GSM/CDMA phone why does it come with a SIM card?(best of my knowledge) and on Sprint like the TP2 which is GSM/CDMA? I know that switching either from CDMA to GSM or GSM to CDMA would be very expensive. That is why TMobile is having a hard time. Either buy out Sprint or Sprint buy out TMobile. But in my opinion GSM might be the standard in the future. Eventually CDMA phones will be phased out. I think that worldwide the census is more GSM than CDMA. So how can Sprint identify their phones overseas without CDMA capabilities... GSM? What i was trying to get at is if you are using an unlocked GSM phone with no way of using CDMA would you be able to use it with Sprint SIM card? How would the SIM card determine where it is, overseas? Cant check CDMA because of no capabilities on a GSM only phone, would identify itself as being overseas ...GSM...right?

You also said that the TP2 would still be activated on the Sprint account? Would that be the phone or phone number? How would you it determine that if you go overseas? Does the TP2 "deactivate itself" and activates the SIM card? or is it just the number that gets transferred to SIM?




So really the ESN doesnt really matter on a GSM network? Because the GSM network doesnt have the ability to read CDMA? So this answers my question about having a GSM only phone with a Sprint SIM card, IF and only if the answer is yes?

Not necessarily talking about the TP2 just on GSM only phones.

Re: SERO owners able to switch to EVO?
 

So if you are in an area with low or no CDMA coverage it wouldnt switch to GSM?

Re: SERO owners able to switch to EVO?
 

i think your extremly confused. only a smalll handful of sprint phones come with a sim card. really the only 2 i know of are the tp2 an a few blackberry phones. ive never heard that the evo would come with a sim card. it will be dual band, but thats evdo/1xrtt and wimax. im acually sure it wont be a world phone with a sim card slot. so asking if you can put a sim card in in is a moot point. i think what your asking is "can you put your tp2 sim card i an evo (or any other phone) and will it work on sprint?" the answer is no. that sim card is for sprint international use. i dont think sprint will make another phone with a sim card slot either. if you sim unlock the tp2 and put an att, tmobile, or pre pay sim in it, it will work i the usa. but only for making anr recieving phone calls. i dont think any data will work. i.e; no internet, not email, no weather.

Re: SERO owners able to switch to EVO?
 

Nope.

Re: SERO owners able to switch to EVO?
 

Nope, just think of it this way. If you have an FM radio and it loses signal, it doesn't switch to AM signal...they are different frequencies. FOR AM/FM radios, you can flip the switch and make it AM...but never will the radio be able to chose between the signals itself.

Re: SERO owners able to switch to EVO?
 

no way sprint and verizon dump cdma. too much money to switch and too many customers already.

Re: SERO owners able to switch to EVO?
 

Here to get matter straight.


TP2 simcard is not active in the device unless you call and international roaming for when your out of the country.

TP2 can be sim unlocked via a hack which allows it to use other carrier branded sim cards but no 3g data

TP2 sim card is useless in any GSM device unless out of the US and still then it is locked to the device.

So the jist of it SPRINT does not actually use SIM cards for service but has them in the device to be used out of the US and not to be used domestically.

Re: SERO owners able to switch to EVO?
 

now that this is settled this thread needs to be closed because it actually has nothing to do with SERO or switching to evo

Re: SERO owners able to switch to EVO?
 

Did you get your questions answered on this or are you still confused about why you cannot put a SIM in the Evo and cannot use it on SERO?

Re: SERO owners able to switch to EVO?
 

i think we scared him off. :(

Re: SERO owners able to switch to EVO?
 

I didn't want to close the thread if the guy still legitimately had confusions about the SIM card thing, but he just took a vacation or something from the thread.

Re: SERO owners able to switch to EVO?
 

aww. your such a nice mod! id say close it down. theres plenty o' reference info for the poor confused guy.

Re: SERO owners able to switch to EVO?
 

After much deliberation, cogitation, rumination, speculation, and scientific testing with tubes, dry ice, flames, and colored liquids, I have come to the conclusion that this thread is over. Please enjoy this Chipotle burrito.

http://weblogs.sun-sentinel.com/feat...rito-thumb.jpg