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  2. BSNL - Wikipedia

    en.wikipedia.org/wiki/BSNL

    On 16 August 2018, BSNL launched "BSNL Wings Services" in 22 telecom circles, in which there is no need for a SIM card or FTTH as it is a VoIP service through an app. [27] It offers unlimited free calling for one year throughout India.

  3. BSNL Mobile - Wikipedia

    en.wikipedia.org/wiki/BSNL_Mobile

    Bharat Sanchar Nigam Limited (BSNL) was incorporated on 15 September 2000. It took over the business of providing telecom services and network management from the erstwhile Central Government Departments of Telecom Services (DTS) and Telecom Operations (DTO), with effect from 1 October 2000 on a going concern basis, in early days it was known as CellOne for GSM mobile services, Excel for ...

  4. Mobile telephone numbering in India - Wikipedia

    en.wikipedia.org/wiki/Mobile_telephone_numbering...

    In India, mobile numbers (including pagers) on GSM, WCDMA, LTE and NR networks start with either 9, 8, 7 or 6.Each telecom circle is allowed to have multiple private operators; previously it was two private + BSNL/MTNL, subsequently it changed to three private + BSNL/MTNL in GSM; however currently each telecom circle has all four operators including Reliance Jio, Bharti Airtel, Vodafone idea ...

  5. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops).

  6. Multi-SIM card - Wikipedia

    en.wikipedia.org/wiki/Multi-SIM_card

    Multi-SIM technology allows cloning up to 12 GSM SIM cards (of format COMP128v1) into one card. The subscriber can leave the original cards in a secure place and use only the multi-SIM card in day to day life. For telecom operator-provided cards, only the Group MSISDN number is known to multi-SIM subscribers.

  7. OneSimCard - Wikipedia

    en.wikipedia.org/wiki/OneSimCard

    OneSimCard offers free incoming calls in over 160 countries, outgoing calls from 25 cents per minute and data service from 10 cents/MB. [7] [8] The SIM card is compatible with unlocked GSM phones and the main phone number, once the SIM card is inserted, is based in the EU. [9]

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