[General Questions and Answers] arclite7:
Why do mobile companies restrict the use of SIM cards from phones from being used in tablets?

While phones were mostly less powerful than the new tablet devices and the larger screens meant there was a greater data demand by tablet devices, this is certainly no longer the case.

Phones are now more powerful than most tablets and the rest are simply equal. Processors are quad core clocked at similar speeds, if not not higher speeds, the working memory is again the latest 1-2Gb configuration with 16-32GB internal NAND flash memory. With phones having the latest 128GB external SDXC memory support to compliment the superior camera resolutions of 22 Mega pixels. Cloud services are now just beginning to gear thewmselves up to cope with this data interchange whereas tablets still have only modest cameras. Phones do now have front and back facing cameras and the similarities continue to converge.

But crucially the screen resolution has become irrelavent because of technical innovation and it is commonsense the data is sent highly compressed through the Internet where it is decompressed and interpolated to match the local screen resolution by the local graphics processing unit, GPU. This item is again of superior design, as a matched technology to the central processing unit, CPU where the mobile phone market is concerned. Both CPU and GPU are expected to have multiple cores to improve performance and the designs are optimised to consume as little power as possible. A great advantage for a mobile phone. The competition leads to great performance in wider world applications and this is the reason for the extreme competition that has been encouraged in the mobile phone marketplace. But of course we, the public, are paying for this R&D whereas it used to be hideously expensive top secret military R&D budgets. The senate was worried about the cost of a hammer and a handfull of screws at one stage.

There has been a complete change in the definition of mobile phone and tablet where the OS is now exactly the same for each, being Android 4.x.x.

So why are telcos forcing people to purchase a separate SIM for each device? I am disabled. I need specialist communication software to assist me in communicating when I am travelling. For this the tablet is better. But while at home or when meeting friends during the evening the mobile phone is the better option. But the telcos refuse to let me use the same SIM in both devices. I cannot use both devices at the same time so I don't see the logic behind this situation.

The situation continues because the telcos think we cannot see they are continuing to enforce this barrier so that they can make a greater profit from users. Please help get people to recognise the false pretence that prevents us all from exercising a freedon of choice to use either device according to our intended purpose without the need to purchase separate SIMS. Afterall, because I can only use one device at a time why am I forced to pay for two 3G or 4G contracts with separate data components?

I don't see any common sense in this situation and I do think we are all being ripped off by this legacy programmed system restriction.

And I did install the phone SIM in my tablet after being told by the telco staff it was OK, where it worked happily for approx 12 hours. Later when I enquired how I could set up the voicemail and SMS services an arrogant technician then told me I could not install this SIM into a tablet, followed rather weakly by, it will stop working after a time.

Given the conflicting statements and the fact the SIM was working when I was being told it would not work I question the reality of the reason for it not working. It may be recognised by a systematic ID check. But the blocking of the data services after an arbitrary period of time raises the question, "Why shouldn't a SIM now work regardless of whether it is a Phone SIMor a tablet SIM.

The legacy rationale a history of tablets as they were originally a platform for advanced circuitry and software to be released and the resulting extra data demand to their internet connection lasted only as long as the phone market had not become so competitive that their technical facilities raced ahead of tablets. In fact the technological improvements in hardware and saftware have brought both devices to an equal status where users can choose the device according to the context of their intended purpose.. So much so that having more than one device to suit practical applications in varied social settings with no impact on the data portion of their respective uses. Example, you can now watch films or TV series while commuting.. Preferable to use a smartphone here. But you can continue exactly where you left off on a tablet or even a smart TV! The data compression and local pixel mapping to suit the resolution of the device is done locally and absolutely without any impact upon the data demand or stream.

There is no reasonable argument to continue differentiating between Phones and Tablets other than to enforce an obsolete regimen and to unfairly extract money from phone and tablet users who unwittingly pay twice for the same telephone and data services! Copyright(CC) Arclite 13-03-2015