Yes you can. You can have multiple travel packs active at the same time, the pack with the earliest expiry date will be used first.

• Calls and SMS: You’ll continue using the allowances from your first pack until it expires. After that, any remaining allowances from your new pack will be used.

• Data: Your data usage will be deducted from the new data pack immediately.

• Exception: If you add the same travel pack, your allowances will reset. Note: This immediate usage applies to calls and SMS usage as well if the first pack expires.