Help with using unlocked phone (OnePlus) - no service - General Questions and Answers

Location: Japan
Carrier: au KDDI and/or Docomo
Phone: OnePlus 7T Pro McLaren Edition (T-Mobile unlocked)
My phone that I bought through au KDDI broke and I wanted to get a new phone anyway, but I wanted to venture into the world of unlocked phones for the first time. I know there is complications with getting phones that are unlocked and compatible with carriers with regards to CDMA/GSM, frequency bands, etc. When I checked info on frequency bands for the OnePlus 7T Pro McLaren I bought it seemed like it would work but it didn't. Still doesn't work with a new carrier who seemed even more likely to work.
Timeline:
1. Using au KDDI
2. Buy this OnePlus 7T Pro McLaren Edition (T-Mobile unlocked)
3. Put in au KDDI sim card. "Emergency Calls only/No service"
4. Manually make APN settings. Still doesn't work
5. More research looks like au KDDI is maybe CDMA, and that phone only works on GSM. Docomo is GSM and many reports of Docomo being usable with many unlocked phones.
6. Buy this prepaid sim card that apparently uses Docomo's network as a test, per advice of anonymous online user.
7. Put in prepaid sim card; works immediately without any APN shenanigans or anything.
8. Go to Docomo, sign a contract with them and get a sim card.
9. Put in new Docomo sim card, and doesn't work ("Emergency Calls only/no service") regardless of which APN settings I select or make.
I give all the links to the exact products and companies I'm using in case someone can find the compatibility issue. Is there something I can do or do I just give up and return this OnePlus 7T Pro McLaren? I'd like to maintain my contact with both companies and try different unlocked phones until I find a phone/carrier combination that works, but do you think any unlocked phone would work? Am I stuck using the phones they carry? Also why would the prepaid card on Docomo's network work but not their actual sim card?

Related

Need HELP With my TOUCH PRO 2

He guys
Here is the question straight forward, I bought a used US Cellular HTC Touch Pro 2 from someone who uses the phone on a CDMA network while i will have to use it on a GSM network the seller said that there is a SIM slot underneath the battery which he never used, Will this phone work on my GSM network outside U.S. and will that phone be unlockable?
thanks in advace
HTC website
HTC website doesn't say anything about GSM support for this phone "US Celleular Touch Pro 2"
any ideas guys???
The touch pro 2 is a world phone and yes it has a sim slot (at least the sprint/verizon models do). I unlocked my phone in the U.S. and used it on AT&T with my buddies sim card, the only problem was that the radio is does not have the 3G frequencies for the U.S. you might have to research if this holds true out side the U.S. since every other country uses a different frequency set for 3G access.
Also plz tone down the font size
ya the seller satated that the phone has a SIM slot then i should assume that it can be used hopefully, and the 3G is frequinces is supported by this phone over here in Egypt and i should be fine.
sorry about the font
whhw31 said:
ya the seller satated that the phone has a SIM slot then i should assume that it can be used hopefully, and the 3G is frequinces is supported by this phone over here in Egypt and i should be fine.
sorry about the font
Click to expand...
Click to collapse
it should work as its sim unlocked for world use. but i cant state about 3g?

HTC 7 Pro network options?

I friend offered me the opportunity to buy an HTC Arrive/7 Pro for a very attractive price, without contract, naturally.
Now, I love WP7, and I like my T-Mobile family plan (in the United States). Unfortunately, I'm a totally newbie in the area of using phones on different carriers. From what I understand, I think it's possible to use an HTC Arrive with a T-Mobile sim card, and make calls, but you cannot modify/unlock it to get 3G support, which I do kind of need.
Am I correct? Or am I way off? It'd be great if I could get it working, complete with 3G, with a little work, on the T-Mobile network, but it's just as possible that I couldn't even make basic calls.
3G worked fine (here in Europe) on tested HTC 7 Pro...
if you want use different mobile carriers, your device must be SIM free (SIM unlocked)
So, it would be possible to use my T-Mobile 3G, provided the phone was unlocked?
I've always been a bit fuzzy on the distinction between a normal non-contract phone, and one that is actually unlocked. I do know, of course, that unlocked phones go for a much steeper price then their locked counterparts...I've seen some websites detailing instructions how to do this, allegedly, is this something I could do myself to a non-contract phone (albiet with paying for a code)?
Phone must be unlock (no branding and no simlock). You nothng write about simlock that phone. When device not have simlock you can use everything simcard and everything frequency, but I don't know how work T-Mobile in your country (not from where you wrote) maybe operator locking 3G but i don't think. You must plug in sim card to phone and check that.
Ah, I'm starting to understand, I think. The HTC 7 Pro is, unlike a lot of Sprint's phones, GSM, HSDPA, WiFi, CDMA compatible--T-Mobile's phones are all GSM. I'm in the USA myself.
However, I can't say anything about frequencieis or anything like that. Has anyone ever tried? If not, I may have to just break down and try on the phone first (with an unlocking code).
I'm not sure but I think that HTC 7 Pro and HTC Arrive is the same only difference to Arrive not supported pre-NoDo. You must try plug in sim card and you learn.
On the page HTC specifications wrote that 7 Pro and Arrive frequency is the same:
Network
AT&T:
HSDPA/WCDMA: 850/1900/2100 MHz
GSM: 850/900/1800/1900 MHz
Telus:
HSPA/WCDMA: 850/1900/2100 MHz
GSM: 850/900/1800/1900 MHz
Click to expand...
Click to collapse
http://www.htc.com/www/smartphones/htc-7-pro/#specs
You must try.
Thank you, I think my only option will be to try.
I was able to find some information on T-Mobile's frequencies, but not Sprint's, at the moment.
I'll be able to return the phone, so the cost would be, potentially, the cost for the unlock code (assuming HTC won't give me one for free). I may have to try this out myself.
Sprint is CDMA and the Arrive doesn't have a SIM card (I have the Arrive and know this for a fact). You won't be able to use it on T-Mobile or AT&T.
LayneRobinson said:
Sprint is CDMA and the Arrive doesn't have a SIM card (I have the Arrive and know this for a fact). You won't be able to use it on T-Mobile or AT&T.
Click to expand...
Click to collapse
I was about to say this, but I'll add my hat to the ring and also say there is no SIM card slot on the 7 Pro (Like there was on the TP2).
Though I wish there was. It makes the Photon look really compelling. :/
Really? That's extremely strange, there's a thread on this site showing how to access the SIM card slot and MicroSD slot.
http://forum.xda-developers.com/showthread.php?t=996015
Maybe this is only for HTC 7 Pros outside the US, which are not CMDA?
Desynthesis said:
Really? That's extremely strange, there's a thread on this site showing how to access the SIM card slot and MicroSD slot.
http://forum.xda-developers.com/showthread.php?t=996015
Maybe this is only for HTC 7 Pros outside the US, which are not CMDA?
Click to expand...
Click to collapse
The guy who made that thread is from Prague, to that's probably the Euro version of the 7 Pro. Europe is mostly GSM. So if you got the unlocked Euro version, it would work on T-Mob, but only EDGE data, not 3G/4G. T-Mobile uses an oddball 3G frequency (UMTS 1700/2100 MHz, also called Band IV), that is not shared by many other networks in the world.
Desynthesis said:
Really? That's extremely strange, there's a thread on this site showing how to access the SIM card slot and MicroSD slot.
http://forum.xda-developers.com/showthread.php?t=996015
Maybe this is only for HTC 7 Pros outside the US, which are not CMDA?
Click to expand...
Click to collapse
Err, I did a funny. I meant to say the Arrive and 7 Pro for US Cellular.

[Q] Will Sprint unlock my S5 for international use?

I switched to sprint about 5 months ago and I got my s5 with a 2 year contract. We also got another line with another phone. The account is in good standing with payments on time always. Will Sprint unlock it for me so I can use it on a trip im taking overseas? I'm not sure what their policy is..and I know they do it OTA, so that means I have to be on stock rom right?
Yes stock rom. Sprint more than likely unlick. Of course you will have to mnew monthly charges. But depend sd wherr your going. If going to us territories sprint will work. Just call sptint anf see
They will usually unlock it for international roaming after having the phone on your account for 90 days.
Sent from my SM-G900P using XDA Free mobile app
please note that most of the world is now based on GSM and Sprint is a CDMA based service. Once unlocked you would probably need a GSM sim card installed in order to use the S5 (this sim card can either be one from the US, a more expensive option, or a local sim wherever you are traveling to).
In Europe, especially UK, there are many cheap GSM sim operators.
Drugman109 said:
please note that most of the world is now based on GSM and Sprint is a CDMA based service. Once unlocked you would probably need a GSM sim card installed in order to use the S5 (this sim card can either be one from the US, a more expensive option, or a local sim wherever you are traveling to).
In Europe, especially UK, there are many cheap GSM sim operators.
Click to expand...
Click to collapse
Yeah that's the plan for me to buy a local sim in that country so I can use the phone with a local number there. Do you know what bands the gsm works on?
euklid said:
Yeah that's the plan for me to buy a local sim in that country so I can use the phone with a local number there. Do you know what bands the gsm works on?
Click to expand...
Click to collapse
Depending on the country involved they use 900 and 1800 mainly but the s5 has all the bands used in Europe. Note that T Mobile is a major carrier so you should be ok with this phone if it is truly unlocked

[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!

T-Mobile OnePlus 7 Pro used in Canada

I have T-Mobile OnePlus 7 Pro for almost 14 months ( with a Texas Number), I'm in Canada and I'm always roaming with Telus network. T-Mobile wont unlock my phone for another 10 months.
I have already flashed my OnePlus with International Firmware successfully, I also bought a dual sim card tray to use both Networks (T-Mobile and a local network) at the same time so people don't have to call a long distance to reach me; I can see 2 sim card however the second SIM card is greyed out.
What do I need to do next to reach my goal?

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