Fron the past year there has been a huge rise in the sale of the Dual SIM Mobile phones in India which is randing in around 1,00,000 Dual-sim handsets sold every month but now there is a stop on this and you cannot even guess the reason for this. Somasundaram 
Ramkumar who is a Madurai resident holds a patent for ‘Phones with Plurality of SIM Cards’ which means that whenever someone sells a handset with Dual-SIM facility, they need to pay RamKumar a royalty of Rs35 and this Patent is valid for 5 long years. This Patent can help him become quick rich because the popularity of these handsets is increasing and all the importers and manufacturers have to pay Rs35 before they sell the handset to the consumers.
This Notice is active for all the major manufacturers like Samsung, LG, MIRC Electronics, Spice Mobile & Fly Mobile , out of which Fly is going to be the biggest sufferer as they have launched many handsets with Dual-Sim capability and since in many international countries you cannot run your country based SIM everywhere so there is always a need for alternative number and these mobile phones can be very helpful. Seems like Ramkumar can become a rich guy if you calculate the Royalty fees he may earn on every handset.
Well nice article but is this patent only valid in india or all over the world if it then tell me i will take patent to three sim and four sim mobile before some one takes patent for it
@Balaji, balaji, see the matter here is, that this guy S.Ramkumar can get the royalty only from the sales of dual sims in India only. he cannot avail it offshore. so sales outside India is not affected. or this guy would have been filthy rich by now. the next problem is that the patent he has acquired is for phones with plurality of sim cards. So be it a dual sim mobile or quadra sim mobile, if you are using his technology then you will have to pay him for that. if you want a new patent then you have got to find a new technology fo the multi sim mobiles.
i really want to know about the longgivity of the phones.
What does this mean?? Ramkumar had developed technology and sold it to others?? How does this patent registration works??
Well nice article but is this patent only valid in india or all over the world if it then tell me i will take patent to three sim and four sim mobile before some one takes patent for it
Yes, I agree
I have purchased FLY Dual SIM phone from Reliance store on 28th. Mar 2009. This year its GSM band automatically stop working on 5th. Jan 2010.
As per my knowledge , the mobiles without IMEI numbers will not function starting from 2010 , as TRAI made it mandatory for IMEI numbers in mobile
This can be one possible reason
DID IT HAVE VALID IMEI NO. I ALSO HEARD THAT THESE SETS ARE NOT WORKING WELL. PLEASE TELL ME ABOUT THEM IF YOUR FRIENDS ARE USING THEM.
I am using one of these, B700 a make by Fly. I am not sure if it is still available in the market or not, but the technology works perfectly. My requirement is fulfilled to use a Dual SIM where I should be able to get connected to both the calls(calls from two SIMs) at the same time, except that the interface is very poor and not so impressive like any Samsung or Philips or any such popular brands. I came to know that Philips X700 is the most rated Dual SIM phone and unfortunately it is not available in India.. Guys, if any one finds a store for this please let us know the details..
well i read this article and i dont know why are we jealous of his profit he has made his technology and he is earning profit for that and regarding roylaty even writers of the take such type of royalty and even you the owner of the site……..
Hi i am kiran, I am using Videocon dual sim phone since it was introduced to market. Excellent features, Cheap and best phones. No problems , I suggest to go for videocon dual sim mobile phones, it is a branded one.
I had a videocon dual sim mobile(1306). I was getting heavy headache even if I talk for 5 minutes. The service centre guys were not able figure out what is the problem , Finally I had to throw the mobile in to dustbin and now I am using LG phone. No headache at all.
hello i am kiron Kumar I want to remind you that my LEMON mobile phone Need a IMEI Software so please get me the software
I was expecting details about problems faced by the users of the dual-sim phones but it is related to the companies. So, this article is not useful (for me at-least).
If S. Ramkumar has patented for multi-sim phones then there is nothing wrong, he is making money by using his brain and without any corruption. Patent & Royalty is everywhere. The best example is of MP3 music format. MP3 is patented and any MP3 music publisher has to pay royalty for it to the owner of MP3 patent and still it the most widely used music format.
i have a spice mobile QT55. surprisingly it works well, only the reception and transmission of speech are not so clear. not only that there service station people are very reluctant to speak also, let alon repairing them. these people have come only to sell the mobile phones, but they have very very poor service. so be very careful before buying them.
Hi,
I want to buy dual sim gsm-gsm mobile range upto 7000, with touchscreen,approx 5mega pixel camera and a good battery back up.can you suggest which model fulfill all these criteria…
hi friends i m using fly mv 135 dual sim mobile…………….. but it not fuction well becoz its sim 2 stop working after regular intervals of time