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Old 07-12-2016, 01:13 PM   #5
vannie
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Join Date: Dec 2002
Posts: 129
It happened to me before also. I told them I only swap back the card back to M1 Sim before reaching Singapore. They said maybe some apps trying to connect to Internet which my Data Roaming Option already set to off.

Not sure whether users from other telcos having this issue or not. It seems that M1 users having this issue. Now I will only switch back to my local sim when I reach checkpoint.
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