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Price and Delivery starting at:

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Unlock Sony Xperia C4

Unlock recommended by the manufacturers of Xperia C4.

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Price and Delivery from:  € 14.95 EUR in 1 to 2 hs

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Trust, Security, and Integrity

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Extremely Happy Customers

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Low Price and Guaranteed Service

Low Price and Guaranteed Service

Nearly 20 years of complete transparency and the lowest prices

27,000 reviews of doctorSIM

Very good
Based on 27,091 reviews
Trustpilot
10 days ago

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.

Nat and Nelly
12 days ago

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!!!!!!

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24 days ago

very nice and smooth experience

very nice and smooth experience. First top to TIM Brasil didnt work because TIM is bad provider. The money stayed in between. So I asked DoctorSIM to change the top up to VIVO (another number of mine) and the money were delivered in 5 minutes to VIVO number, so I could use the data and so on. DoctorSIM works perfectly with top ups.

Gregory
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Frequently Asked Questions

I can't find my Sony Xperia model in the doctorSIM list.

All Sony Xperia unlocks are compatible with each other. This means you can select any model to unlock your Sony Xperia, and the instructions will be valid. Remember to enter the IMEI correctly and check first that the device has attempts remaining.

I don't know who my original carrier is.

If you do not know which company originally sold the device or are not entirely sure, request the unlocking through the Sony Premium service. You can select any country and operator of origin, and the instructions will be valid.

What is the difference between the Sony Standard and Sony Premium unlocking services?

The Sony Premium service consults a more extensive database and is also the most recommended option if you do not know the original operator. It has a 99% success rate.
The Sony Normal service consults a more limited international database, with a 95% success rate. However, if you know the original operator and are not in a hurry, we recommend that you try this option first. If unlocking is not possible through this method for reasons attributable to doctorSIM, we will refund your money so that you can request the Sony Premium service.

How can I find out if my cell phone still has unlock attempts available?

Sony phones have 10 attempts to enter the unlock code. Remember that if they are exhausted, we will not be able to unlock it for you. You can check it as follows:
Option A:

  1. Press the MENU key once.
  2. Press the BACK key twice
  3. Press the MENU key once
  4. Press the BACK key once
  5. Press the MENU key twice
  6. Press the BACK key once
(summary of the combination sequence: 1-2-1-1-2-1) Once in the service menu, check the number that appears next to the text on the first line "Network." This is the number of attempts remaining.
Option B:
If the above sequence does not work, do the following:
  1. Turn on your phone with a SIM card inserted (VERY IMPORTANT).
  2. Dial the sequence *#*#7378423#*#*
  3. Select Service Info and then SIMLock. One of these two options will appear:
    [X] Network 10
    [0] Network 10
  4. If you have an X or 0 followed by a value other than 0, you can unlock your device.
  5. If you have a 0 (to the right of the word Network), you will not be able to unlock it.

How long does the release take?

The guaranteed delivery time will appear when you select the country and operator of origin. However, we also indicate the average delivery time for the service you are requesting, so you can know how long it usually takes.

What happens if the phone's software is modified?

Unlocks are 100% effective on unmodified software. However, if the software has been modified, the customer must restore the phone to factory settings and assume the risks of unlocking, as the settings necessary for unlocking have been altered.

How do you unlock a Sony Xperia?

To unlock a Sony Xperia, you must insert an incompatible SIM card and enter the unlock code after unlocking the SIM card with your personal PIN code. The unlock code is generated by doctorSIM so that you can use your mobile phone with any operator in any country.

Why unlock your cell phone with doctorSIM?

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REPUTATION

This is the service recommended by operators and manufacturers.

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SPEED

It is the easy, fast, safe, and legal way to unlock.

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SAFETY

You keep your phone's warranty intact.

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WARRANTIES

Do not let go of your cell phone at any time.

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RELIABILITY

You can use it during the release process.

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EASY

Easy-to-follow release instructions.

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SUPPORT

The best customer service at your disposal.

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VERSATILITY

You can use your cell phone with any carrier in the world.

Unlock Sony Xperia C4 phone

How to unlock a Sony Xperia C4 by IMEI

The Sony Xperia C4 is an Android phone weighing only 147 grams and at 7.9 mm thick is perfect for those of you who can't put their phone down. The TFT LCD screen measures 5.5 inches and with a resolution of 1080 x 1920 pixels.

You can legally and permanently unlock your Sony Xperia C4 at doctorSIM from the convenience of your home. Process your unlocking request submitting the information indicated on screen and then follow the simple instructions we'll send to your e-mail.

This Sony Xperia model has a 13-megapixel camera located on the back for recording Full HD videos with autofocus, zoom, and face/smile detection functions. The C4 smartphone also has a 5-megapixel front camera with Full HD recording capabilities.

The 2600 mAh non-removable lithium polymer battery should give you around 12 hours of talk time and 680 hours of standby. Regarding hardware and storage, this Sony Xperia phone has a 1.7 GHz Octa-Core ARM CPU processor, 2 GB RAM memory, and 16 GB of internal storage. The C4 phone also supports external storage of up to 128 GB.

Unlocking by IMEI will not damage the phone or void the warranty.

The Xperia C4 smartphone is available in white, black and a mint color, although the color range may vary depending on the specific model.

If you don't know the exact model, don't worry as the unlock code is valid for the C4, C4 Dual, and C4 Dual TV.