**** BEGIN LOGGING AT Wed Jun 27 03:00:01 2018
Jun 27 07:06:05 <Maxdamantus> Hmm .. interesting behaviour .. if I try to send an SMS to "+640000‹my local number›", maemo figures out that I am the recipient, since I have "0<my local number>" as myself in the address book, but my service provider seems to keep rejecting the message, presumably because of the 0s.
Jun 27 07:06:41 <Maxdamantus> and when I continue trying to send messages to myself just through selecting myself in the address book, it continues trying to send to that number with the extra 0s.
Jun 27 07:07:02 * Maxdamantus wonders if his provider's behaviour is incorrect in rejecting messages due to extra 0s.
Jun 27 07:08:20 <Maxdamantus> Restarting csd also doesn't reset that state .. have to send another SMS addressed to something like "+640<my local number>"
Jun 27 07:11:11 <Maxdamantus> er, rather, "+64<my local number>"
Jun 27 07:12:42 <ceene> the phone latching the state is strange
Jun 27 07:12:56 <ceene> but the fact that it believes that +84xxxxxx<number> is your number, is something very usual
Jun 27 07:13:10 <ceene> it happens on all nokia phones since forever, and I guess that it still happens on android phones
Jun 27 07:13:11 <ceene> let me check
Jun 27 07:13:24 <Maxdamantus> I'm guessing it's significant that the numbers are just 0s.
Jun 27 07:13:48 <ceene> yep, same thing
Jun 27 07:13:54 <ceene> doesn't matter if they are 0s or whatever
Jun 27 07:14:04 <ceene> the phone only checks the least significant digits
Jun 27 07:14:08 <ceene> in fact
Jun 27 07:14:39 <ceene> let's say your number is +64789876543, where +64 is your country code, the phone would recognize +64889876543 as the same contact
Jun 27 07:14:44 <ceene> note that i've replaced the first 7 with an 8
Jun 27 07:15:28 <Maxdamantus> Hm, yeah, interesting .. when I do "+641234<my local number>" it also resolves to myself as the contact.
Jun 27 07:15:59 <ceene> try to replace a couple of digits at the begining of your local number, it'll happen the same
Jun 27 07:16:24 <Maxdamantus> Weird. Do you know what is likely to be the logic behind that?
Jun 27 07:17:14 <Maxdamantus> btw, all the time I've been saying "<my local number>", that number starts with "21", but for local mobile numbers we always put "0" in front of them, dunno if that actually signifies anything.
Jun 27 07:17:15 <ceene> i think for older phones, they just didn't want to lose storage by saving all the possible country codes that do exist, so instead of checking the full number, let's check only the 5-6 rightmost digits
Jun 27 07:17:29 <Maxdamantus> when using the number internationally, one would put "+64" in front instead of "0"
Jun 27 07:17:42 <ceene> and that's probably another reason: sometimes, you have to dial a prefix in front of a number, but it depends on the network you're at
Jun 27 07:18:10 <ceene> if I'm in spain, i can call any 6xxxxxxxx or 9xxxxxxxx number, but while on roaming, I need to place +34 in front of that
Jun 27 07:18:32 <ceene> so, since there's probably not an easy logic, and each cell provider on any country can do whatever the hell they want
Jun 27 07:18:42 <ceene> the easiest solution is to just check the rightmost digits
Jun 27 07:18:57 <Maxdamantus> Hm, interesting.
Jun 27 07:19:22 <ceene> i first realized that happening when I dialed manually the number of my then SO of 2 days
Jun 27 07:19:27 <ceene> i had mismemorized the number
Jun 27 07:19:45 <ceene> but when manually dialing, the phone would tell me "I'm calling SO", but in fact I was calling the number I typed
Jun 27 07:19:51 <ceene> so an angry guy kept shouting at me
Jun 27 07:20:06 <ceene> until I decided something was wrong, let's ask her what her number is, let's check what's on my contact list, etc etc
Jun 27 07:24:56 <Maxdamantus> as for the "0" in front of "<my local number>", that seems to be optional, but I can't add more than one "0" to the beginning.
Jun 27 07:26:29 <Maxdamantus> Ah, apparently "00" is a standard IDD prefix, so that will obviously be ambiguous in some countries.
Jun 27 07:30:03 <Maxdamantus> apparently that's the IDD prefix used here.
Jun 27 07:30:28 <ceene> if you dial from a landline, instead of +xx you have to type 00xx
Jun 27 07:30:39 <ceene> so the 00 on the cellular phone probably works exactly as +
Jun 27 07:31:01 <Maxdamantus> Well, aiui, the "00" part can vary between countries/providers.
Jun 27 07:31:20 <ceene> i thought that was a standard, but i guess it can vary too
Jun 27 07:31:21 <Maxdamantus> which is why "+" is used as a generic way of representing the necessary prefix.
Jun 27 07:31:55 <Maxdamantus> https://en.wikipedia.org/wiki/List_of_international_call_prefixes
Jun 27 07:32:19 <ceene> China, Italy, the United Kingdom or any other country following the ITU-recommendation
Jun 27 07:32:27 <ceene> I guess that's why I thought the 00 was everywhere
**** ENDING LOGGING AT Thu Jun 28 03:00:02 2018