O2 DOWN: UK mobile network crash

[Dave]

Sorry to be pedantic, but the reality is sometimes different. You are either lucky, or have well configured devices: https://en.wikipedia.org/wiki/Time_to_first_fix

I’ve been lucky virtually every weekday for the last 10 years?

Ok....





How about a link to show that GPS categorically won’t work without a data connection???

 

[Dave]

What are you gals fighting about again?

He’s being a looney and trying to claim that a GPS won’t work properly without a data connection.

 

[Gordon_R]

He’s being a looney and trying to claim that a GPS won’t work properly without a data connection.

I never said that GPS can't work without data. If you can read, I stated that the time to first lock-on is faster when you have data assistance.

Edit: The corollary, is that without data, the lock-on time may be so long that GPS becomes useless.

 

[Hamish McPanji]

He’s being a looney and trying to claim that a GPS won’t work properly without a data connection.

It works, but it's slower to fix on startup

Any more question?

 

[Dave]

It works, but it's slower to fix on startup

Any more question?

I know that dumbo.

Here are the two posts that started the conversation.

FYI, GPS doesn’t require a data connection...

GPS orbital ephemeris capture can take 5-10 minutes without a terrestrial internet connection.

Try it on your phone, do a cold-boot, turn off data, and see how long GPS takes to lock on...

I never said that GPS can't work without data. If you can read, I stated that the time to first lock-on is faster when you have data assistance.

Yes, you did, you claimed 5-10 minutes for first lock without data connection. And then you went further and claimed without data it’s useless.

Edit: The corollary, is that without data, the lock-on time may be so long that GPS becomes useless.

FFS

Stop speaking crap. The average is is around 30 seconds, your own links say so, how does a 30 second to first fix make it useless?

 

[Gordon_R]

I know that dumbo.

Here are the two posts that started the conversation.


Yes, you did, you claimed 5-10 minutes for first lock without data connection. And then you went further and claimed without data it’s useless.



FFS

Stop speaking crap. The average is is around 30 seconds, your own links say so, how does a 30 second to first fix make it useless?

Wow, stop with the personal insults!

The figure of 10 minutes is for a cold/factory scenario, where each satellite is searched in turn (single channel). It probably does not apply to the modern/expensive receivers that you have used.

We probably agree more than we disagree. I am merely trying to point out a hypothetical scenario which matches the experience of people, other than you.

If the satellite signal is lost during the 30 seconds, the ephemeris process has to start again. That could easily happen in an urban area with tall buildings, or in a moving vehicle.

Without a valid ephemeris, GPS will not work.

Do you think its magic?

 

[Hamish McPanji]

Do you think its magic?

We're in Africa. It's magic, I have been told many times.

 

[The Voice]

Millions of UK customers’ data down this morning. Poor things are berserking all over Twitter.
Sounds like their first world services are too horrendous. Gotta love the precious.

https://www.express.co.uk/news/uk/1055068/O2-down-o2-4g-not-working-mobile-network-o2-mobile-latest

At least we have power.

 

[Dave]

Wow, stop with the personal insults!

Are you whiteknighting for @Hamish McPanji now, if he doesn’t like his pet name he’s a big boy and will tell me.

The figure of 10 minutes is for a cold/factory scenario, where each satellite is searched in turn (single channel). It probably does not apply to the modern/expensive receivers that you have used.

We probably agree more than we disagree. I am merely trying to point out a hypothetical scenario which matches the experience of people, other than you.

If the satellite signal is lost during the 30 seconds, the ephemeris process has to start again. That could easily happen in an urban area with tall buildings, or in a moving vehicle.

Without a valid ephemeris, GPS will not work.

Do you think its magic?

Jesus, but you’re tedious, in the real world, even in the world before a-GPS even existed GPS units were getting locks in multiple seconds, if it’s taking 10 minutes there’s a fault somewhere (that would even be true of the very first TomTom stand-alone GPS receiver).

You prattle on like a hyperactive kid on a complete tangent.

GPS does not need a data connection to work, fact.

How do you think GPS works in the middle of the Sahara desert or an ocean?

If you want to refute that as fact, do so without just copying and pasting half a Wiki page and refute it in your own words with a link to back it up.

 

[Hamish McPanji]

At least we have power.

Now you're being racist

Or something

 

[Dave]

Now you're being racist

Or something

Tell me sweetheart, were you offended by being called Dumbo?

 

[Dave]

At least we have power.

Whatever you do, don’t mention having water as well .

 

[Hamish McPanji]

Tell me sweetheart, were you offended by being called Dumbo?

I'm fat, have big ears and a large trunk...why would I get offended?

 

[Dave]

I'm fat, have big ears and a large trunk...why would I get offended?

2 out of 3 isn’t bad...

 

[Gordon_R]

@Dave

I'm tired of responding to your selective quotations, and BS. Time to do a real test.

Take the battery out of your phone, leave for 5 mins. Put it back in, switch to flight mode, turn on GPS, and wait for a fix.

Edit: Do not set the time.

Please let me know what happens...

 

[Dave]

Take the battery out of your phone, leave for 5 mins.

Have you been out to feed the horse that pulls your cart yet?

 

[Dave]

I'm tired of responding to your selective quotations, and BS

The only BS is yours.

My question is quite simple, answer it...


It really shouldn’t be that difficult for an expert like you.

Here it is again;

GPS does not need a data connection to work, fact.

How do you think GPS works in the middle of the Sahara desert or an ocean?

If you want to refute that as fact, do so without just copying and pasting half a Wiki page and refute it in your own words with a link to back it up.

 

[Gordon_R]

The only BS is yours.

My question is quite simple, answer it...


It really shouldn’t be that difficult for an expert like you.

Here it is again;

Have you actually tried it, or are you just repeating yourself?

My phone, an old Samsung S3, will not lock onto satellite GPS without an ephemeris.

P.S. Last time I looked O2 was not a service provider in the Sahara, and I don't know anyone who has tried to navigate across the desert with a cellphone, so your point is irrelevant.

 

[Dave]

Have you actually tried it, or are you just repeating yourself?

My phone, an old Samsung S3, will not lock onto satellite GPS without an ephemeris.

Just answer the questions I asked.

1) have you fed your horse?
2) how does GPS function in the Sahara desert?
3) how does GPS function in the middle of the Atlantic Ocean?

Refute in your own words:

GPS does not require a data connection to function.

How long will you need?

 

[Gordon_R]

Just answer the questions I asked.

1) have you fed your horse?
2) how does GPS function in the Sahara desert?
3) how does GPS function in the middle of the Atlantic Ocean?

Refute in your own words:

GPS does not require a data connection to function.

How long will you need?

You keep repeating a straw-man argument which I have not ever made. I know perfectly well how a GPS works in the absence of a data connection, but that is not the point of this discussion.