topic Re: 4G service with non-4G based tariff in Discussions & Feedback

4G service with non-4G based tariff

anticpated — Sun, 04 Jan 2015 20:18:22 GMT

OK recently, I was in Edinburgh over the holidays to see if there was any sale bargains and what not. I noticed that the signal indicator changed to 4G and the signal was mostly strong. So evidently this means if you have a 4G-capable mobile regardless if you have a 3G tariff, you can still access 4G (LTE) speeds providing you are in the correct area.

What confused me was, a couple of people said to me that you need a 4G SIM and contract to access this type of network. It looks like O2 have updated their networks to work using a hybrid system which will use the fastest transport possible - not restrict you by your SIM type.

I believe this is another grey area where people can tricked into paying more for something they normally can't access. So I don't know this is just an O2 easter egg or the same for all networks however all this means is the 4G tariff merely is just more data allowance not a key to the 4G network.

Anyway I thought it would interesting to mention to anybody with a 4G phone however yet to use the service.

Re: 4G service with non-4G based tariff

Anonymous — Sun, 04 Jan 2015 20:21:51 GMT

Hi anticpated

That's definitely something I've not come across before.

Yes we are told a person needs

A compatible 4G phone, 4G SIM card and 4G tariff !!

Re: 4G service with non-4G based tariff

MI5 — Sun, 04 Jan 2015 20:29:33 GMT

I was of the belief that all o2 contracts had been upgraded to 4g now regardless?
Certainly all mine were, even the 100 min/100mb simo that I have....
When did you last do a sim swap? If your sim serial number starts with 4ggp then it is a 4g sim card already so would explain you receiving a 4g signal.

Re: 4G service with non-4G based tariff

Cleoriff — Sun, 04 Jan 2015 20:38:34 GMT

So...let me check...I have a 4G phone with an old 3G sim in ....Are you saying that if I travel to a 4G area I will get 4G? If so, I never noticed that when I went to Coventry and Birmingham before Xmas...?

Re: 4G service with non-4G based tariff

Bambino — Sun, 04 Jan 2015 20:40:42 GMT

No. You will not get 4G with a 3G sim.

Re: 4G service with non-4G based tariff

MI5 — Sun, 04 Jan 2015 20:44:33 GMT

@Bambino wrote:
No. You will not get 4G with a 3G sim.

Correct - I am guessing @anticpated has a 4g sim already.

Re: 4G service with non-4G based tariff

Cleoriff — Sun, 04 Jan 2015 20:45:48 GMT

@Bambino wrote:
No. You will not get 4G with a 3G sim.

I didnt think so...but @anticpated didn't specify what sim was in his phone?

I understand what he is saying about getting 4G whilst I presume he must be on a 3G tariff....but I just wanted all the info

Re: 4G service with non-4G based tariff

Cleoriff — Sun, 04 Jan 2015 20:46:33 GMT

@MI5 wrote:
@Bambino wrote:
No. You will not get 4G with a 3G sim.
Correct - I am guessing @anticpated has a 4g sim already.

But on a 3G tariff then?

Re: 4G service with non-4G based tariff

anticpated — Sun, 04 Jan 2015 20:46:53 GMT

I've never looked at the SIM code, although I can do that before I put it on charge. It has 4GPP2 on the Microsim, meaning the guy must have just done that at the swap-over. Until now, I never ever thought to look. I presume the 3G SIM's have a different code or are unmarked.

Re: 4G service with non-4G based tariff

Cleoriff — Sun, 04 Jan 2015 20:48:44 GMT

@anticpated wrote:
I've never looked at the SIM code, although I can do that before I put it on charge. It has 4GPP2 on the Microsim, meaning the guy must have just done that at the swap-over. Until now, I never ever thought to look. I presume the 3G SIM's have a different code or are unmarked.

So you have a 4G sim but a 3G tariff...??

Re: 4G service with non-4G based tariff

Anonymous — Sun, 04 Jan 2015 20:59:48 GMT

All o2 tariffs are now 4g

Re: 4G service with non-4G based tariff

MI5 — Sun, 04 Jan 2015 21:00:28 GMT

He has a 4g sim and a 4g tariff - All O2 tariffs have been upgraded automatically so will receive 4g when in a 4g area.

Re: 4G service with non-4G based tariff

anticpated — Sun, 04 Jan 2015 21:00:37 GMT

Sorry for any confusion there although as you can I was imagine, before I properly investigated was a bit surprised by the situation. It's not like O2 to do something which is actually quite surprisingly good and at the same time misleading. 😉

Anyway for around £6 a month if I could get 250MB more data allowance. Being as my local area isn't 4G savvy it would be a waste of time however at least I know when it is I should get it without changing SIM.

Thanks for the responses - welcome to the recesses of my mind!

Re: 4G service with non-4G based tariff

MI5 — Sun, 04 Jan 2015 21:01:17 GMT

@anticpated wrote:
I presume the 3G SIM's have a different code or are unmarked.

Surprisingly they start 3ggp

Re: 4G service with non-4G based tariff

anticpated — Sun, 04 Jan 2015 21:02:37 GMT

At least now, I will armed with this information when the vultures swoop the next time I'm in a mobile shop. :mantongue:

Re: 4G service with non-4G based tariff

Cleoriff — Sun, 04 Jan 2015 21:04:41 GMT

@MI5 wrote:
He has a 4g sim and a 4g tariff - All O2 tariffs have been upgraded automatically so will receive 4g when in a 4g area.

Well, even I would expect to get that....So not an innovative thing for me to try... I thought for one minute I needn't bother swapping sims or tariffs

Re: 4G service with non-4G based tariff

anticpated — Sun, 04 Jan 2015 21:05:00 GMT

3GGP well I never. I thought that was a chemical compound.

Re: 4G service with non-4G based tariff

Cleoriff — Sun, 04 Jan 2015 21:05:39 GMT

@anticpated wrote:
3GGP well I never. I thought that was a chemical compound.

Re: 4G service with non-4G based tariff

anticpated — Sun, 04 Jan 2015 21:08:13 GMT

Call me stupid if you like however this was not explained to me at the time when the SIM swap took place. Then I got the O2 message about the network upgrade. It just nice to know that I'm on the same page right now.

Re: 4G service with non-4G based tariff

MI5 — Sun, 04 Jan 2015 21:09:18 GMT

@anticpated wrote:
3GGP well I never. I thought that was a chemical compound.

Oh, are you talking about, TyrA proteins belong to a family of dehydrogenases that are dedicated to l-tyrosine biosynthesis. The three TyrA subclasses aredistinguished by their substrate specificities, namely the prephenate dehydrogenases, the arogenate dehydrogenases, and thecyclohexadienyl dehydrogenases, which utilize prephenate, l-arogenate, or both substrates, respectively. The molecular mechanism responsible for TyrA substrate selectivity and regulation is unknown. To further our understanding of TyrA-catalyzed reactions, we have determined the crystal structures of Aquifex aeolicus prephenate dehydrogenase bound with NAD(+) plus either 4-hydroxyphenylpyuvate, 4-hydroxyphenylpropionate, or l-tyrosine and have used these structures as guides to target active site residues for site-directed mutagenesis. From a combination of mutational and structural analyses, we have demonstrated thatHis-147 and Arg-250 are key catalytic and binding groups, respectively, and Ser-126 participates in both catalysis and substrate binding through the ligand 4-hydroxyl group. The crystal structure revealed that tyrosine, a known inhibitor, binds directly to theactive site of the enzyme and not to an allosteric site. The most interesting finding though, is that mutating His-217 relieved theinhibitory effect of tyrosine on A. aeolicus prephenate dehydrogenase. The identification of a tyrosine-insensitive mutant provides anovel avenue for designing an unregulated enzyme for application in metabolic engineering ?