Losing a phone is not like losing a wallet. The SIM, the accounts and the photos are often worth more than the handset. The first minutes are for cutting access, not chasing the thief.
The right order is five steps: line, accounts, location, report, block. Each has a precise effect, and skipping the first can undo the rest.
Suspend the line first
Your first move is not tracking the device but suspending the line. A thief who keeps your SIM can receive SMS codes for your accounts, and those codes open more doors than the phone itself.
At Djezzy, customer service is on 777 from a Djezzy mobile, or 0 770 85 77 77 from any other number. Ask for the line to be suspended immediately, not just the handset blocked. The line can be reactivated if you recover the phone.
If the SIM disappeared with the handset, the operator asks for a loss or theft declaration and an ID to issue a new SIM with the same number. Do that after the police report, not before.

Locate, then lock
Google runs Find Hub, formerly Find My Device. It is active as soon as a Google account is added to the phone. It shows the last known location and lets you ring, lock and display a message on the device.
Apple uses Find My. From icloud.com/find you can put the iPhone in Lost Mode, show a message and erase the data. Find My must have been enabled before the loss. If it was not, none of these options exist.
Do not remove the device from your account. On iPhone, that turns off Activation Lock and makes the phone easier to resell. On Android, it also cuts the link that lets you find it.
Remote erase is a last resort. It protects the data but destroys the trail. An erased iPhone keeps Activation Lock, and your Apple password is needed to use it again. An Android phone will ask for your Google account.
The report and the IMEI block
Blocking runs through the IMEI, a fifteen-digit number. It is printed on the box, the receipt or the phone's paperwork. If you still have the device, dial *#06# to display it.
In Algeria the procedure is structured. Djezzy says the three operators, Djezzy, Mobilis and Ooredoo, work together to block stolen handsets and make them unusable on all three networks. The steps are: suspend the line, file a report at a police station or gendarmerie with the IMEI, then give a copy of the attestation to customer service.
Without the attestation, the operator does not block the handset. The report is not paperwork: it is the document that triggers the block. Keep the case number too.
The block applies to Algerian networks. A phone resold abroad may recover part of its value, and trafficking networks know it. That is one more reason to act quickly.

The SIM is a door to your accounts
An active SIM can receive SMS. Many services still send a six-digit code to reset a password. The thief does not need to unlock your screen to use that gap.
Start with the most sensitive accounts: main email, banking, social networks, Google or Apple. Change the password from another device and sign out open sessions. Turn on two-factor authentication with an app, not SMS.
WhatsApp deserves special attention. The number alone is enough to reactivate the account on another phone. If you receive a code you did not request, do not share it. Tell your contacts that a message from your old number may be a scam.
Traps after the theft
Scammers exploit panic. A text says your iPhone has been located and asks for your Apple credentials. A call claims to be the operator and asks for the code. A message offers to return the device for money.
Apple never asks for your password by text. An operator does not ask for your verification code. If someone demands payment to return a phone, tell the police instead of sending money.
Also avoid meeting alone someone who says they found the device. Involve the police or choose a busy public place.
If you get it back
Reactivate the line with the operator, then turn off Lost Mode. Check the accounts: connected devices, active sessions, call forwarding rules. A thief may have installed a profile or changed a password within minutes.
If the phone was erased, restore the backup. If you had none, the photos are gone unless they were already synced.

Prevent the next one
Turn on Find My or Find Hub before you need it. Write down the IMEI outside the phone, in a notebook or a password manager. Lock the screen with a long code, not a four-point pattern.
Keep the system updated. Android offers theft protection features, including remote locking with your phone number. On iPhone, Stolen Device Protection blocks some changes without Face ID or Touch ID.
Finally, back up. A lost phone without a backup costs twice: the device and the memories.
Verdict
A lost phone is handled in this order: line, accounts, location, report, block. Location alone protects nothing. The IMEI plus a report is what makes the handset unusable, and suspending the line is what closes the SMS door.
Read next
- Check a phone's IMEI before buying
- iPhone scams in Algeria: how to spot them
- Compare phones sold in Algeria
Sources
- Djezzy: stolen phones and blocking across the three networks
- Google: find, secure or erase a lost Android device
- Google: theft protection on Android
- Apple: if your iPhone was stolen
Photo credits
Photos: Vyacheslav Argenberg (CC BY 4.0), Gilles Lambert (CC0), Cvalda (CC0), Ilya Plekhanov (CC BY-SA 4.0). Files via Wikimedia Commons.



