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[Q] Is my Desire S going to work in Mexico?

I bought a Desire S on China...and now I am going to Mexico for a couple months. If a use a Mexican SIM Card will it work with the available mobile operators in Mexico?
**In case it does not, what do I need to do?
Thanks XDA forum guys!

lost.in.china said:
I bought a Desire S on China...and now I am going to Mexico for a couple months. If a use a Mexican SIM Card will it work with the available mobile operators in Mexico?
**In case it does not, what do I need to do?
Thanks XDA forum guys!
Click to expand...
Click to collapse
As long as it is not SIM Locked, I don't see why it won't work on any GSM network...
In Mexico, the predominant cellular service company is called Telcel, currently owned by Carlos Slim. Telcel uses the GSM networks on the 850 and 1900 bands – which is the same frequencies that GSM carriers use in the United States and Canada. ref : http://www.cellularabroad.com/mexicocellService.php
And the Desire S is compatible with both these bands. ref : http://www.gsmarena.com/htc_desire_s-3776.php
Happy journey, mate. Enchilada time!!

enigmaamit said:
As long as it is not SIM Locked, I don't see why it won't work on any GSM network...
Click to expand...
Click to collapse
How can I know is the SIM is locked?
**And by the way, I am anxious for some enchiladas! Yummy!

lost.in.china said:
How can I know is the SIM is locked?
Click to expand...
Click to collapse
If your phone is branded (some cell operator) it will show some kind of logo either on the phone physically or splash screen etc.
Simple test - Take out your current SIM card from your phone and put in another SIM of a different carrier (different from the one you're using now). If it works, and you're able to make/receive calls, you are SIM unlocked. This is the simplest confirmatory test I'm aware of!
If you bought the phone in China, I highly doubt ANYTHING will be locked!!

If you mean "send and receive calls" - yes, it will work. In the worst case it'll require network unlock, which is something like $15, give or take a few.
If you mean "3G data will work" - no, it won't. The UMTS frequencies are incompatible with Desire S.

No Sim recognized even after putting it in India

I got my Nexus 5 from the US today , its the D820 version , I earlier read that 2g and 3g will available for this model , but when I have put the sim (micro) , it shows NO SIM. Can Anyone HElP!

karanv.10111 said:
I got my Nexus 5 from the US today , its the D820 version , I earlier read that 2g and 3g will available for this model , but when I have put the sim (micro) , it shows NO SIM. Can Anyone HElP!
Click to expand...
Click to collapse
Get a new micro sim from your operator or if u have any other, that is not the cut one but given by the stores try with it.

Operators like Airtel, bsnl, vodafone use GSM 850/900/1800/1900 MHz range here as well so it should work!
Make sure you the sim is cut properly and after inserting the sim, reboot the device!

[Q] D6633 Hacking

Hey guys,
So I have the Z3 Dual, but where I live, we only get 3G network and no GSM, which brings me to my question:
Is anyone working towards a hack to allow my device to run BOTH my Telstra SIM cards in LTE mode without one reverting to GSM?
Thanks in advance,
Phil

Really? No gsm signal or 2g. I think 2g structures are the most basic one that every carrier Has. BecAuse if 3g becomes congested, the subscriber can fall back to 2g. Anyway i guess no hack is on going because of the rooting issues with this plus i think it's a hardware limitation. 2 simcards cannot use 1 modem (the 3g/4g) because that would tax a lot of battery power
Sent from my D6633 using XDA Free mobile app

There are 2 radios in the phone I'm suspecting, since both SIM's run different IMEI numbers (1 per radio) if you check in About Phone/Status and check the 2 SIMs.
So I can't see why this is a limitation.... renders the phone worthless for what I wanted it for (Work sim and Personal sim),
And yes, where I live, there has never been GSM, it was CDMA before the towers were upgraded to 3G (Central Wheatbelt is Western Australia).

Dysstatic said:
There are 2 radios in the phone I'm suspecting, since both SIM's run different IMEI numbers (1 per radio) if you check in About Phone/Status and check the 2 SIMs.
So I can't see why this is a limitation.... renders the phone worthless for what I wanted it for (Work sim and Personal sim),
And yes, where I live, there has never been GSM, it was CDMA before the towers were upgraded to 3G (Central Wheatbelt is Western Australia).
Click to expand...
Click to collapse
When you use the first SIM with LTE the second has no signal?
I can't understand if the second sim limit is only for connection or also for 3G bands.
I mean: you can still use the second line on a 3G network only for calls and SMS without using data connection or not? The second line is limited on 2G bands?
thanks for answers I ordered a Z3 Dual 2 days ago

theskig said:
When you use the first SIM with LTE the second has no signal?
Click to expand...
Click to collapse
Correct, because the second sim drops down to GSM, which we don't have in rural Western Australia. And vice versa, set the second SIM to LTE/WCDMA and the first SIM drops down to GSM. Meaning, you cannot run 2 SIM's side-by-side unless you live in an area that has GSM/2G still.
theskig said:
I can't understand if the second sim limit is only for connection or also for 3G bands.
I mean: you can still use the second line on a 3G network only for calls and SMS without using data connection or not? The second line is limited on 2G bands?
thanks for answers I ordered a Z3 Dual 2 days ago
Click to expand...
Click to collapse
So, you choose either SIM as your data sim. Whichever you choose, that sim runs in LTE mode and the other SIM is used for calls/sms only.
SMS and phone apps both have 2 send buttons labelled 1 and 2, so you can send messages or make calls from either SIM at the press of a button. But only 1 SIM has data active, that is the SIM running in LTE mode.
I have messaged Sony Mobile Developers regarding this, the reply was:
From: [email protected]
Hi Phil,
Thanks so much for your email. We will forward the dual SIM issue you have identified to our internal teams for further investigation.
Best regards,
Developer World
Hope this helps
Regards,
Phil

Dysstatic said:
Correct, because the second sim drops down to GSM, which we don't have in rural Western Australia. And vice versa, set the second SIM to LTE/WCDMA and the first SIM drops down to GSM. Meaning, you cannot run 2 SIM's side-by-side unless you live in an area that has GSM/2G still.
So, you choose either SIM as your data sim. Whichever you choose, that sim runs in LTE mode and the other SIM is used for calls/sms only.
SMS and phone apps both have 2 send buttons labelled 1 and 2, so you can send messages or make calls from either SIM at the press of a button. But only 1 SIM has data active, that is the SIM running in LTE mode.
I have messaged Sony Mobile Developers regarding this, the reply was:
From: [email protected]
Hi Phil,
Thanks so much for your email. We will forward the dual SIM issue you have identified to our internal teams for further investigation.
Best regards,
Developer World
Hope this helps
Regards,
Phil
Click to expand...
Click to collapse
Thanks for infos!
That's weird! If I live in a place with only 2G or only 3G network I cannot use 2 sim cards!
But I remember reading on online user manual that the 2 sims network settings are separated, right? If you force both on the right frequency?
In a few days I'll receive the phone and I'll help you with some tests

theskig said:
Thanks for infos!
That's weird! If I live in a place with only 2G or only 3G network I cannot use 2 sim cards!
But I remember reading on online user manual that the 2 sims network settings are separated, right? If you force both on the right frequency?
In a few days I'll receive the phone and I'll help you with some tests
Click to expand...
Click to collapse
Correct, both sims wont run on 3G at the same time..
Both sims WILL run on 2G at the same time though (GSM).

[Completed] Samsung SM-W2017 China Telecom Flip Phone help using it outside China!

Hey all,
I received this beautiful samsung flip phone designed inspired from yesteryear as a gift from a good mate in China:
http://www.samsung.com/cn/smartphones/samsung-w2017/SM-W2017ZKYCTC/ [use Google Translate - see specifications more for supported GSM bands (a lot of them are AU compatible) but then goes to say phone only works in China, Macao, HK and Taiwan!]
I'm in Australia but I'm finding that out of the two SIM CARD slots. Slot 1 (4G LTE) does not work and a message pops up saying 'It's detected that your inserted card doesn't match the terminal. Please replace it with a China Telecom 4G user card in time'. Slot 2 works fine (but only 2G service!!) which is pretty useless.
Any chance any of you can point me to a solution? My friend tells me the store never provided any prior notice that the phone was locked to the China Telecom telco, simple the GSM frequency bands. Are there any XDA guru's who can cook an unlocked ROM for this phone as it's only released/sold out of China...
Any help, greatly appreciated - would hate to send this back!!!!

Anybody....? Really lovin' this phone, but would be AWESOME if anyone can help me unlock it's 3G/4G SIM Slot 1! I've been liaising with this sim-unlock.net site, are they trustworthy and can do the job? Clearly told them phone is not asking for any unlock code, just doesn't accept non-China Telecom SIM cards for sim slot 1.

tribestar said:
Hey all,
I received this beautiful samsung flip phone designed inspired from yesteryear as a gift from a good mate in China:
http://www.samsung.com/cn/smartphones/samsung-w2017/SM-W2017ZKYCTC/ [use Google Translate - see specifications more for supported GSM bands (a lot of them are AU compatible) but then goes to say phone only works in China, Macao, HK and Taiwan!]
I'm in Australia but I'm finding that out of the two SIM CARD slots. Slot 1 (4G LTE) does not work and a message pops up saying 'It's detected that your inserted card doesn't match the terminal. Please replace it with a China Telecom 4G user card in time'. Slot 2 works fine (but only 2G service!!) which is pretty useless.
Any chance any of you can point me to a solution? My friend tells me the store never provided any prior notice that the phone was locked to the China Telecom telco, simple the GSM frequency bands. Are there any XDA guru's who can cook an unlocked ROM for this phone as it's only released/sold out of China...
Any help, greatly appreciated - would hate to send this back!!!!
Click to expand...
Click to collapse
Greetings and welcome to assist. Unfortunately I don't know of anyway to carrier unlock samsung phones without either going to the original carrier or a third party unlocking service. The second sim for 2g is normal in china, they have one sim for calls (2g) and one for data (4g)
Regards
Sawdoctor

Any third party unlocking service that you know will do the job? I really need to get the 4g slot working to make the phone worhtwhile using!

Help me - Infocus m808 is working only in 2G

Hi
Maybe you can help me.
I used my M808 2 years. In 2 days i can't call and sms and don't have internet when i have 3G or 4G. When i force 2G i can call and sms. In 3G i can see range but i cant call to anybody.
Do you have idea how i can fix it?
I done hard reset and nothing, I try my SIM card in other smartphone and there i had 4G ok.
Will Change rom help?

Lobotom_ said:
Hi
Maybe you can help me.
I used my M808 2 years. In 2 days i can't call and sms and don't have internet when i have 3G or 4G. When i force 2G i can call and sms. In 3G i can see range but i cant call to anybody.
Do you have idea how i can fix it?
I done hard reset and nothing, I try my SIM card in other smartphone and there i had 4G ok.
Will Change rom help?
Click to expand...
Click to collapse
This could be caused by a few things.
1. Hardware fault.
2. Your carrier (SIM Provider) switched to a none supported band or bands. The M808 does not support LTE band 20 (800mhz) which is common in Europe
Supported Network Bands:
(2G) GSM 850/900/1800/1900MHz
(3G) WCDMA 850/900/1900/2100MHz
(4G) FDD-LTE B1/B3/B7/B8/B28
3. APN settings although this would not affect voice calls
4. Your carrier Decided to block your phone by IMEI from using anything other than 2G and yes they do sometimes do this O2 did it to me some years ago now with absolutely no warning or reason given so I will never ever use them again the arrogant s****
5. Duplicate IMEI someone is using a phone with the same IMEI as yours on the same network. This can cause all kinds of strange stuff to happen. Again happened to me when I restored the incorrect backup. Both mine and my sons phone ended up with the same IMEI . It took ages to work out what was going on with that one
I would suggest you first try another sim card from another provider that use's the supported bands for 4G (3UK) if in the UK it used to work fine on my Old M808.

I done some tests.
I put my sim card to other phone - everything is ok.
I put other provider sim card to my phone - only 2G is working properly.
I done flashing - no improvement.
Im afraid hardware fault.
Any more sugestions?

Lobotom_ said:
I done some tests.
I put my sim card to other phone - everything is ok.
I put other provider sim card to my phone - only 2G is working properly.
I done flashing - no improvement.
Im afraid hardware fault.
Any more sugestions?
Click to expand...
Click to collapse
Full Firmware Upgrade using SPFlashTool If that dont fix it then it's time for a new Phone see the original Infocus V5 M808 Thread for ROM s and tools.
https://forum.xda-developers.com/general/device-reviews-and-information/infocus-v5-mt6753-5-2-fhd-2gb-ram-16gb-t3341297
MM ROM's and Recovery's https://forum.xda-developers.com/showpost.php?p=67345310&postcount=182