Software dev, tech, mind hacks and the occasional personal bit

Treo 650 incompatible with Optus Postpaid SIMs

Over the last 6 months, my old Treo 600 touch screen was dying. Cleaning and re-seating helped for a while, but eventually, the touch screen stopped working. As the Treo 680 barely improves on the Treo 650, and costs a lot more, I bought a new-ish Treo 650 on eBay. All went well until I tried to send SMSes using my Optus SIM. No luck – I got an error 4027 every time I tried to send a SMS, although voice and GPRS worked fine.

First attempt at a solution was to set the Message Centre Number in the phone. Strangely, the Message Centre number (configured though the SMS app) was always empty, and when I tried to set it to the correct number for Optus, the value wouldn’t stick past a phone reset.

Thanks to Google, I found the outline of a solution on a message board.

In summary, the Treo 650 (unlike the Treo 600) is not compatible with Optus’s standard post-paid/plan SIMs used in Australia. However, it is compatible with the Optus pre-paid SIMs. If you have a Treo 650, and a post-paid/plan SIM, you can buy yourself a new pre-paid SIM for $4 from your local Optus store, then ring the Optus call centre to have them do a “SIM replacement” to move your account and number to the new SIM. This solves the problem within minutes of the “SIM replacement”.


Automating MySQL Database Backups


Practical JRuby on Rails (Web 2.0 Projects) by Ola Bini

1 Comment

  1. Spiro

    Thank you for this blog entry. It is exactly the problem that I’m having, and has reassured me that I’m not crazy or incompetent.

Powered by WordPress & Theme by Anders Norén