Member Avatar for Gagzseo

Hi,

I want to unlock huawei EC156 modem given with tata photon plus. I need change sim card to access other network provider data plans like airtel, aircel etc... please help me

Thank you...

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Clarification for : the Huawei EC156 supplied with Tata Photon+ is a CDMA EV-DO Rev A USB modem in NON‑RUIM mode — it is a CDMA data stick, not a GSM/HSPA device. That means it will not accept or run Airtel/Aircel GSM SIMs; swapping in a GSM SIM is not a viable way to use those networks. (Huawei EC156 user manual). (R-UIM / CDMA vs SIM explanation).

If the objective is to reuse the EC156 on a different CDMA/R-UIM-capable carrier, the path is different from a GSM “SIM unlock.” Some EC156 units can be unlocked or reconfigured using specialist tools; DC‑Unlocker publishes an EC156 detect-and-unlock procedure that shows the typical workflow (device detection → read IMEI/firmware code → unlock → firmware update and R‑UIM setting changes when required). That approach generally requires paid credits/tools and appropriate firmware files. (DC‑Unlocker EC156 procedure).

Practical checklist before trying anything risky: locate the device IMEI (printed on the stick or read from the modem via AT+CGSN or *#06#), confirm whether the modem reports RUIM vs NV-only when detected, and take a full NV/firmware backup if the tool supports it. Do not run firmware writes or “mode” changes without the exact updater code/file and a working backup — improper updates can brick the device or void warranty. (AT+CGSN reference: Hayes AT command set). (Hayes AT command set / AT+CGSN).

Recommendation: for Airtel/Aircel service buy an unlocked GSM/HSPA/3G USB modem or use a phone hotspot — converting a CDMA EC156 into a GSM stick is not practical. If the goal is another CDMA provider, first check with the original carrier (as suggested) and otherwise use a known specialist (DC‑Unlocker or a reputable local shop), understanding there are costs and risks.

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Member Avatar for rubberman

Assuming you completed your contract term with the original carrier, you should go to them to unlock it. Myself, I only get unlocked devices. I had a Nokia that I wanted to unlock and tried one of the online services - it didn't work. Fortunately, I was only out about $10-20 USD for the effort. In the USA these days, I think that the carriers have to unlock the phone/modem if you have fulfilled your original contract that subsidized the device.

Member Avatar for susuka

hi,
its simple to unlock your huawei EC156 modem using unlock codes.you can ask for the network provider to which it is locked to or else you can go for online providers such as [snipped] here all you need to do is just give your IMEI number,country/network to them and they'll give you code to unlock your huawei modem.its easy try it out.

Edited by Ezzaral because: Snipped promotional link.
Member Avatar for venmalathy

try reset code from service provider and reset it...

Member Avatar for ebuygate

Suppliers are generally unwilling to provide unlock codes

Edited by Ezzaral because: Snipped 'fake sig' link. Please restrict such links to your site-wide user signature, which can be edited from the user control panel.
Member Avatar for rubberman

Suppliers are generally unwilling to provide unlock codes

In the US they are required to by law if you are either changing providers or your contract is up. Don't know about other countries though...

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