Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.



850 posts

Ultimate Geek
+1 received by user: 22


Topic # 96597 1-Feb-2012 00:15 Send private message

For some time now mobile phones bought in NZ or Australia have been 'unlocked', usually meaning that any SIM card could be dropped in and the appropriate network used.

I have recently been shown a website selling new phones, but many have the rider that they can only be used on Vodafone or 2Degrees networks .... thus excluding Telecoms' XT and/or Skinny.

When the frequency types and ranges are compared, these phones all have exactly the same as all the telco networks, so I was wondering what would actually prevent them working with a Telecom NZ SIM card?

Cheers,

R.

Create new topic
2329 posts

Uber Geek
+1 received by user: 78


  Reply # 575601 1-Feb-2012 00:27 Send private message

What you're seeing (besides the ones SIM locked to skinny) is that XT _REQUIRES_ 850Mhz UMTS/3G (NOT GSM/2G).
Most 900/2100 3G phones (with newer exceptions) don't also do 850.

16240 posts

Uber Geek
+1 received by user: 1239

Trusted
Vodafone NZ

  Reply # 575603 1-Feb-2012 00:30 Send private message

They make look like the same model but they generally have different chipsets that support different 3G bands but some getting more common do support all 3G bands used in NZ 850/900/2100 UMTS

Telecom XT 850/2100 Mhz
Vodafone / 2Degrees 900/2100 Mhz

John




19414 posts

Uber Geek
+1 received by user: 1259

Moderator
Trusted
Biddle Corp
Subscriber

  Reply # 575615 1-Feb-2012 06:18 Send private message

FYI the vast majority of phones sold in Australia are locked. There are however plenty of places online that sell unlocked and imported handsets that aren't locked.


BDFL
49530 posts

Uber Geek
+1 received by user: 4377

Administrator
Trusted
Geekzone
Subscriber

  Reply # 575624 1-Feb-2012 07:47 Send private message

Telecom XT is 3G only (in some boxes shown as WCDMA or UMTS). 2G (GSM) is an old, different technology.

850 MHz 3G is not the same as 850 MHz 2G.





16240 posts

Uber Geek
+1 received by user: 1239

Trusted
Vodafone NZ

  Reply # 575628 1-Feb-2012 07:59 Send private message

Telecom XT is 100% 850Mhz 3G and only uses 3G 2100Mhz for capacity in fill not coverage






850 posts

Ultimate Geek
+1 received by user: 22


  Reply # 575650 1-Feb-2012 08:38 Send private message

Thanks guys, and yes Steve, you are correct about locked handsets in Australia ... my error.

Now, to summerise, UMTS means Universal Mobile Telecommunications System, and is essentially the 'third generation' (3G) of the technology used for mobile phone networks ... itself based on the Global System for Mobile Communications (GSM). Prior to this, and still working in many places, is 2G technology. In addition, there is HDSPA (High Speed Downlink Packet Access, which is an 'enhancement' of 3G.

In NZ we have a number of mobile telephone providers, each with one or more of their chosen network technologies, thus -
Telecom XT & Skinny = 3G 850/2100 Mhz
Vodafone/TelstraClear/2Degrees = 3G 900/2100 Mhz

The site I was looking at shows, for example, the Motorola Defy Plus as being:

General 2G Network GSM 850/900/1800/1900
3G Network HSDPA 900/2100, HSDPA 850/2100, or HSDPA 850/1900

BUT supporting only Vodafone and 2Degrees.

Question: If Telecom's XT/Skinny requires 3G 850/2100, then would not this be the same as the 3G HSDPA 850/2100 since HDSPA is presumably backward compatible with its base 3G system?

R.

BDFL
49530 posts

Uber Geek
+1 received by user: 4377

Administrator
Trusted
Geekzone
Subscriber

  Reply # 575654 1-Feb-2012 08:41 Send private message

Rickles: The site I was looking at shows, for example, the Motorola Defy Plus as being:

General 2G Network GSM 850/900/1800/1900
3G Network HSDPA 900/2100, HSDPA 850/2100, or HSDPA 850/1900

BUT supporting only Vodafone and 2Degrees.

Question: If Telecom's XT/Skinny requires 3G 850/2100, then would not this be the same as the 3G HSDPA 850/2100 since HDSPA is presumably backward compatible with its base 3G system?


"3G Network HSDPA 900/2100, HSDPA 850/2100, or HSDPA 850/1900"   

This to me indicates there are three models of this handset. If the seller says it's for Vodafone and 2degrees only then it's likely he's only selling the 900/2100 model. A few sellers have no idea of technology and copy specifications word by word, instead of listing what they actually have for sale. The only clue is the "only for [this network]" note.







850 posts

Ultimate Geek
+1 received by user: 22


  Reply # 575660 1-Feb-2012 08:48 Send private message

Morning Mauricio,

Yeah, I noticed the "or" and thought it could be indicative of either the handset being capable of the full range, OR just one of many flavours .

I think you are right that we should assume that at least the retailer is stating correctly which networks the device they are selling will work with.

R.

7682 posts

Uber Geek
+1 received by user: 266

Trusted
Subscriber

  Reply # 575781 1-Feb-2012 11:07 Send private message

It's still quite a bit cheaper to make devices with dual (900/2100 or 850/2100) HSDPA than tri or quad band

Different phones models are definitely not created equal there are many trade offs in phone design.

If you're worried about being able to switch networks why not go for a quad band 3G phone like like the iPhone 4GS or the international version of the Samsung Galaxy S II.

http://www.clove.co.uk/samsung-galaxy-s-ii-i9100-16gb 
http://einfo.co.nz/shop/samsung-gti9100-galaxy-ii-black-special-price-in-stock-p-23005.html 

Not sure if HTC sell a quad band 3G phone yet

Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

Warning: Rage Ahead - Campbell Live and childhood poverty
Created by kawaii, last reply by networkn on 2-Sep-2014 23:30 (130 replies)
Pages... 7 8 9


Does NZ need better gun laws?
Created by mattwnz, last reply by heylinb4nz on 2-Sep-2014 16:23 (104 replies)
Pages... 5 6 7


What tyre brand/model to look at ?
Created by Mark, last reply by Oblivian on 2-Sep-2014 21:36 (35 replies)
Pages... 2 3


VideoEZY OnDemand
Created by Andib, last reply by davidcole on 2-Sep-2014 20:10 (63 replies)
Pages... 3 4 5


Judith Collins: I am resigning
Created by Presso, last reply by gzt on 2-Sep-2014 11:42 (109 replies)
Pages... 6 7 8


Cirque du Soleil Cellphone Hijack
Created by myopinion, last reply by PhantomNVD on 1-Sep-2014 18:01 (21 replies)
Pages... 2


Orcon Global Mode launched
Created by freitasm, last reply by shk292 on 1-Sep-2014 11:32 (132 replies)
Pages... 7 8 9


Lightbox press event release
Created by freitasm, last reply by IcI on 30-Aug-2014 17:54 (562 replies)
Pages... 36 37 38



Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.