1097535 - We should ignore duplicated sms

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: RIL, defect)

Description

[David Moreira [:vash]]

Receive duplicate sms in FirefoxOS 1.3.0.0 and the ZTE Open C model.

Seems not reproducible.

The duplicate sms are receive at the "same time".

Comment 1

[Julien Wajsberg [:julienw]]

All I know is that it seems to happen to me as well (in v2.0).

Hey Bevis, I know we don't have much information here, but I wonder if you can give some more insight on the possible reasons? Maybe we receive the SMS twice from network because the ack was not received (this could definitely happen for me in the subway :) ) and we don't deduplicate correctly?

Comment 2

[Bevis Tseng[:bevis][:btseng](Exited)]

(In reply to Julien Wajsberg [:julienw] from comment #1)
> All I know is that it seems to happen to me as well (in v2.0).
> 
> Hey Bevis, I know we don't have much information here, but I wonder if you
> can give some more insight on the possible reasons? Maybe we receive the SMS
> twice from network because the ack was not received (this could definitely
> happen for me in the subway :) ) and we don't deduplicate correctly?

Yes, it's possible.
As you mentioned, the only possible reason I can imagine is that
SMSC will try to resend the SMS if the ACK isn't arrived on time due to bad network condition.

Because the raw SMS PDU received from network won't be stored into our database and it's time/space-wasted to check whether the received PDU is duplicated from the database.
The handy solution to detect it in device side is to always cache the last recieved raw SMS PDU when arrived and then reject the duplicated one when it comes again.

Comment 3

[BMO Automation]

Firefox OS is not being worked on