this happened to me 1st time the other day. using Skype 220.127.116.11 from my UK registered Skype account; located in UK 4 now; on Ubuntu 11.04 temporarily; have sent most txt previously from a Windoze platform, no idea if this issue has occurred there or not (have sent a lot of texts that I am sure are delivered from that platform from different countries/locations to mobiles on many different networks).
I am 'kinda in the business', so a coupla observations that may help people figure out what is really happening.
Sype IM are stored on your computer until delivered to the far end; so sender & receiver have to be on-line with working internet between them for long enough for the delivery+acknowledgement to take place.
Text messages from a PHONE are ALSO stored in the mobile network providers 'message centre' computer; and can be/are delivered to the destination phone some time after you sent; including at times when your phone is no longer in coverage or is switched off.
In the original GSM network spec (fixed around 1990), text messages were seen as a way of sending messages occasionally for free...so there may be some things left out of the whole spec that are important for reliable delivery and charging for all the txt that are sent today..
High end phones provide for a 'delivery acknowledgement' = message sent in reverse direction automatically by receiving phone, which goes through the reverse path.
Most phones have an option to configure how long the 'phone' will keep trying to deliver the message..
The issue here is 'how much resource is available on the message centre computer' ? A HUGE amount of messages are sent every day in each country ( N * 10M); and sometimes they are deliberately delayed by 'the authorities' for their 'Lawful Intercept purposes' ; as you can see from the occasional very long time taken to deliver a message to a phone that you know is in coverage & switched on...
It is not really the 'phone that keeps re-trying; it is message centre computer; so there clearly will be a point where it has so many messages backed up that it is trying to deliver that it cannot cope with any more...
WHY is this relevant to Skype txts ? ...because your PC running the Skype client & the Skype 'server' somewhere (which will be a relatively 'small' computer since Skype do not have huge call charges/revenues) have to appear just like a normal 'phone to the mobile provider message centre computer...
When you see the 'sent' and 'delivered' icons in the Skype txt client, what do they actually mean ? I would like to think 'sent' means Skype knows the text is safely sitting in the message centre computer of the operator network that will deliver the message ....and 'delivered' means really that; PLUS the 'acknowledge message' has made it all the way back to your PC (which may or may not have been disconnected from Skype for some time..).
IF storage space on the mobile operator message centre computer or Skype's 'gateway' computer is limited (remember, N * 10M per day, at least 1kbyte per message due to the overheads associated with 'tracking' the message) how is the space shared between real messages and acknowledgements ??
SO.... in view of above system architecture...how to interpret my experience ?
Where I sent 3 txt in quick succession to an Orange registered mobile around midnight that was active/in coverage in the UK ....1st txt was never delivered according to Skype; & does NOT appear to be charged on the 'call details' page of their web interface, 2nd & 3rd messages WERE delivered according to Skype ( & are charged); I need to check with far end how many were actually received..
13-04-2012 09:29 - last edited on 29-06-2012 17:24 by Bruno
I now realise i am suffering from the same problem, no delivery to australia, saudi arabia and sri lanka, please help, message states delivered and a charge is levied. This is immoral
skype are impossible to contact
EDIT : title/message case changed
Up until yesterday 14th April, all my sms messages were going through without a hitch and now there are three which are undelivered after 24hrs. What is the solution to this problem ????
I was trying first time Skype SMS to mobile in Finland. It has now took 5 hours, SMS status is sent, but not delivered and it is not actually received either by mobile. It is possible to call to same number with Skype, but SMS is not working.
Sending SMS needs the number to be in the correct format.
Usually, it means that you will have to leave out a number in the beginning.
Like for example the first 0.
So instead of: +46 0** ******* change number to +46 ** *******
Thank you to ther person who kindly suggests that we may all have got our telephone numbers wrong. That was really unhelpful. Sure, if you send a message, or ring someone, you need to get their telephone number correct, and in the correct format. So why, clever clogs, do some messages get through - and for some of us, the messages got trhough regularly, and then suddlenly became erratic, and unreliiable.
For having read this message board for a while it appears that the problem affects some countries more than others. It seems also to affect people using the message service across countries. I do not know the SMS protocol standard, but it looks like this is not being applied in the same way between countries.
I also note that Skype immediately put up a correct delivery note against the message, way before it can have received receipt of the delivery from the receiving end. When I use my KPN mobile it takes several seconds for the message to be positively confirmed.
I wish that Skype was more reliable with SMS. I suspect that most of us try to use it so that we can send messages to the recipient in the language and character set that the receiver uses. I can find no simple way of entering Cyrillic script on my mobile - although I think it may be possible. It is much easier on my computer keyboard.
Am I missing something but it's now May 2012 and having looked at othe peoples logs who have experienced the same problems we have i.e. have been able to send sms text messages for years and now for two weeks the majority are not being received.
Does skype not do customer service?
I dont think they service problems - only set up to collect ur money
All of a sudden now I had to confirm my profile telephone number with a code they supose to sms me (sms sent to ******************) paid by myself - off my balance of course. Imagine if they ask all of their subscribers to do this - how many milion in revenue do they create for themselves???
- well I have been waiting for that code now for 14hrs -
Skype's customer service sucks!!