UP TO
-30%
Price and Delivery from:
€ 16.95 EUR11 hCarrier release your Grundig
Professional network
unlocking services via IMEI
Price and Delivery from: € 16.95 EURin11 h
- Get coverage on any compatible GSM network.
- Reduce your monthly cell phone bill.
- No roaming charges while overseas.
- Lowest prices guaranteed.
- 100% legal.
Check whether your phone has been reported stolen before requesting to have it unlocked.
Check your phone by IMEI
BLACKLISTED
27,000 reviews of doctorSIM
Hassle Free & Super Fast Top-ups.
We have been using DoctorSIM for topping up our SIM cards for many years now, and we have consistently had an excellent experience.
The service has always been fast, reliable, and professional, with very reasonable rates and an impressive range of networks available globally. This is a real advantage compared with many other providers in the same business.
On one occasion, we accidentally entered an incorrect SIM/telephone number when making a top-up. As the funds could not be applied, DoctorSIM promptly processed a full refund back to the card we had originally used for the payment. Their response was quick, professional, and hassle-free.
And our most recent experience says it all: we topped up a SIM just a few moments ago, and the funds were credited within approximately three seconds. You simply cannot ask for much better service than that.
All in all, DoctorSIM has consistently delivered a first-class service over the years. We have no hesitation in recommending them 100% and will certainly continue using their services.
i love dr sim
i love this system its fast, user friendly, ive never come across any problems with it and honestly its just so useful and practical, i use it to buy my friend data every so often to help him out, but theres so many other features its so cool!! and i trust that they wont steal my info and sell it or anything too i love dr sim!!!!!!
As usual everything went smooth as…
As usual everything went smooth as silk. DoctorSIM team is always ready to help and assist to complete your transaction is a professional and friendly manner. Topping up from abroad to help a family member or a friend in a few minutes is priceless. Thank you again!
How to unlock my Grundig phone with doctorSIM?
Fill in the request form
Select payment method
Receive simple instructions by email
2. Once you receive the unlock code, insert another SIM card into your Grundig phone.
3. When prompted for the network code, type the code sent to you from doctorSIM.
It couldn't be easier!
How to release a Grundig
FAQ Grundig unlocking
What is an IMEI number?
The International Mobile Equipment Identity (IMEI) is a unique 15-17 digit number given to every cell phone which can then be used to check information such as the device's country of origin, the manufacturer and its model number.�
Where can I find my IMEI number?
You can obtain the unique IMEI number of your Grundig by typing *#06# on the device's keypad or under Settings. If you see 17 digits, just send us the first 15. Do not trust the number printed either on the back of the phone, the box or underneath the battery as it may not coincide with the actual IMEI.�
Why do I need a second SIM card to unlock my Grundig phone?
One of the items you need to unlock a Grundig cell phone is a SIM card belonging to a network different to the original. Without this SIM card, the phone will not prompt for the unlock code and the unlocking will not be possible. If you have not received the SIM card of your new carrier yet or simply don't have one, we recommend borrowing one from a friend or family member as completing the unlocking process only takes a couple of minutes.�
Will my Grundig phone be permanently unlocked?
Yes. Unlocking your cell phone with doctorSIM is a one-time event! You can also restore your Grundig to factory settings and download all official software updates without worrying that it will lock again to any network.�
Can I unlock my Grundig device if under contract?
Yes, you can unlock your cell phone even if you have signed a fixed-term contract with your current network but you will still have to pay your monthly bills until the contract expires. If you stop paying your monthly bills, your carrier will blacklist your Grundig and it won't work properly on any network in the country of origin of the original operator.�
How do I know for sure if my Grundig cell phone has been blacklisted?
If you think your Grundig may have been reported due to theft, loss or non-payment, either ask your network carrier or use our free blacklisted phone check to find out. With doctorSIM's IMEI phone check, you'll receive a comprehensive report on your cell phone in a matter of seconds including whether it has been blacklisted and if so by which carrier.�
Do your services remove cell phones from the blacklist?
Unfortunately, doctorSIM's network unlocking services cannot remove a phone from the blacklist. If your Grundig is ever reported for any reason you will need to contact the network carrier that placed it on the blacklist for assistance.�
Unlock your Grundig yourself from the convenience of your home or office by simply typing in an unlock code. No technical skills required!
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