You will not get your Mobile handset back unless a honest person returns it to your local police in which case you could claim it back by proving to them that you 'own' this handset with particular imei number. Your lost/stolen handset can however be made useless to a third party by having this specific and unique imei number reported as being lost/stolen and thus effectively disabling it from all mobile networks. Hope it helps you understand the situation better.
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You will not get your Mobile handset back unless a honest person returns it to your local police in which case you could claim it back by proving to them that you 'own' this handset with particular imei number.
Your lost/stolen handset can however be made useless to a third party by having this specific and unique imei number reported as being lost/stolen and thus effectively disabling it from all mobile networks.
Hope it helps you understand the situation better.