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to split your number over two SIMs

Started by: 90elsa
On: 08/01/2019 | 17:44
Replies: 28
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by: lordvincent
on: 11/01/2019 | 14:21

It's a decent idea, and no, it is not illegal.

 

It could theoretically be done using sim cards - this would not require cloning sims, which is illegal, but rather it would be two separate sims, or extensions if you like, on the same account and with the same mobile number. While not illegal, this would require new industry standards to work properly, which seems unlikely.

 

However this could be done, and is being done, leveraging voip and wifi calling, with devices being linked under one account and calls made/received on the same number. Giffgaff still doesn't even offer wifi calling, so don't hold your breath about features like this on giffgaff or other MVNOs.

 

http://www.gizmodo.co.uk/2018/06/ees-letting-you-use-the-same-number-across-multiple-devices/

 

 

 

 

Message 21 of 29
by: 90elsa
on: 12/01/2019 | 18:19
I don't know that. Which law ?
Message 22 of 29
by: 90elsa
on: 12/01/2019 | 18:20
by: glaswegianeric
on: 10/01/2019 | 21:13 - edited: 10/01/2019 | 22:05

@tazzy19 @_kara_ correct me if I'm wrong but what's not legal is two sims with the same IMSI number, i.e. cloned sims.

However, two sims with different IMSI numbers that are linked to the same mobile number aren't the same as cloned sims, are they?
Message 17 of 21
Message 23 of 29
by: 90elsa
on: 12/01/2019 | 18:22
Great !! Thanks
Message 24 of 29
by: 90elsa
on: 12/01/2019 | 18:25
Interesting ! Thanks
Message 25 of 29
by: _kara_
community giff-staffer

on: 12/01/2019 | 19:11 edited: 15/01/2019 | 18:14

@90elsa wrote:

by: glaswegianeric
on: 10/01/2019 | 21:13 - edited: 10/01/2019 | 22:05

@tazzy19 @_kara_ correct me if I'm wrong but what's not legal is two sims with the same IMSI number, i.e. cloned sims.

However, two sims with different IMSI numbers that are linked to the same mobile number aren't the same as cloned sims, are they?
Message 17 of 21

I believe that in this case what is happening is that in this case the SIMS technically have different numbers but a network can provide a "Single Number" service where the second SIM can behave as though it is the same number.  The second SIM uses "presentation CLI" to spoof outgoing calls and a network-level call-divert to manage incoming calls.  I guess this may be possible for someone to set up for themselves?  This sort of tech stuff isn't really my area so I can't be certain though.

giffgaff Educator

Message 26 of 29
by: glaswegianeric
on: 13/01/2019 | 16:50
@_kara_ thanks for the response. I'm still confused re what's actually illegal in the UK - cloning a sim (two sims - same IMSI) or cloning a number (for instance, in the way you've described).
Message 27 of 29
Highlighted
by: alexmccarthy1212
on: 13/01/2019 | 17:05
Great idea especially thanks for the post, I heard about cloning myself
Message 28 of 29
by: harrrrrry
on: 16/01/2019 | 08:51

@_kara_

 


I guess this may be possible for someone to set up for themselves?

Part 1 -- the ability to ring a second number if the call is not connected to the primary number -- can be satisfied by setting up divert on no reply and divert on not reachable. If both numbers are on giffgaff, then the diversion would be funded by free gg to gg calls where applicable, otherwise it would come out of the member's goodybag. Reasonably practical, reasonably ecconomical and needs no system changes in the short term

 

Part 2 -- using presentation CLI so that outgoing calls from the auxiliary number show the caller ID of the primary number is not presently possible and would require some development from giffgaff.

 

 

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Message 29 of 29