The market of Dual SIM mobiles in increasing enormously and also the complaints on them | Classification of dual SIM mobiles based on their functionality
The use of two mobile network connections for personnel, job and business needs are increasing enormously. To overcome the inconvenience of using two mobiles for two networks, dual SIM mobiles have been introduced into the market. Many users of these dual SIM mobiles are complaining that only one of the two connections is working and the other is prompting switched off message when trying to call. These sorts of complaints are also filed against the reputed brands such as NOKIA, SAMSUNG. These problems are caused generally due to having the incomplete knowledge about the functionality of the phone. All the dual SIM mobiles have two slots for two SIM cards but the functionality will be three types.
Dual SIM with single standby phone: These phones contain two slots for two SIM cards but only one can be activated for calling at a time. The screen displays one network and calls can be received to the respective network only. The same SIM card only can be used for outgoing calls also. The other SIM doesn’t work when one SIM is activated. NOKIA C1 (Rs.1999) and SAMSUNG 1225 (Rs.2000) models belongs to this category. In the NOKIA C1 on pressing start button for some seconds the first connection will be stopped and the other will be activated. In SAMSUNG mobile # button is used for this purpose. Thus only one connection works at a time in these models.
Dual SIM with Dual Standby: These mobiles display two networks at a time on the screen and receive the phone calls of both the SIM cards. But if the other SIM gets a call while attending a call on the first SIM, the caller will hear the message that the phone is switched off. The user can receive and make calls with both the SIMs one after the other, but not at a time. 90% of the dual SIM mobiles that are available in the market belong to this category. Some Indian domestic companies such as Micro max, Celkon, and Karbonn are selling these mobiles from the range of Rs, 1250-1400 only. SAMSUNG is selling these types of mobiles from Rs. 3000 and LG from Rs. 4500 and above. But the Chinese mobiles of this category are available in the market from Rs. 1000 only. But it should be kept in mind that the Chinese phones doesn’t have warranty and the probability of getting problems with battery backup are more.
Dual SIM with Dual Standby – Dual talk: In this type of phones, the user will hear call waiting beep on getting call to the other SIM while talking on one. Thus the user will be aware of the call on the other SIM. If the call on the second SIM is more prior, first call can be kept on hold and the second can be attended. After completing the second call the user can swap to the first call. It means that these mobiles provide the facility that resembles call waiting service which is normally provided on one connection. SAMSUNG is selling this type of models from the range of Rs. 3800 and above.