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Problems receiving SMS whilst using GPRS?


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Guest krankie
Posted

I run a text message service for a Nationwide Conference club. The text messages are sent out via a secure website.

On Saturday for the first time this season I didn't have access to a landline so was using my SPV as a GPRS modem to connect the laptop to the internet to send out the alerts (there were several - we won 4-0 :) )

There were no problems connecting to the website but my own phone, which is subscribed to the service for quality control purposes, only recieved about half the alerts. It seemed to receive them OK if I disconnected from the net immediately after sending the message so the only conclusion I could reach is that it is not possible to receive SMS text messages whilst a GPRS connection is active. Can anyone confirm this and why this is so?

Very early mobiles could not receive text messages whilst a call is in progress but phones today can cope with both simultaneously now, so I was surprised to find this problem on Saturday. Has anyone else experienced this? Any advice would be welcome and would put my mind at rest.

Guest awarner [MVP]
Posted
the only conclusion I could reach is that it is not possible to receive SMS text messages whilst a GPRS connection is active.  Can anyone confirm this and why this is so?  

Correct as GPRS is different connection to the phone network

so you can only use one or the other at any one time.

Guest krankie
Posted

Cheers for the quick response.

Why though were the messages lost completely? I would have thought Orange would have delivered them once the GPRS connection had been closed but it seems to have just got rid of them and not tried to deliver them again. :)

Guest awarner [MVP]
Posted

Messages go in a loop sending cycle rather then constantly try to sent the SMS so if you did not receive them

when they were sent you mayshould get them later when the cycle comes round.

I had real problems with O2 regarding this a while back and had to get them to force messages to me in order to receive the ones that were sent hours ago.

Also there was a bug posted ages ago about some SMS going to the SIM so you would not realise they had arrived.

Posted

I think SMS messsages try to be re-sent every 6 mins in the first hour, then once every 6 hours.

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