The Subscriber Identity Module (SIM) agenda is acclimated in adaptable phones as a anamnesis dent which contains abstracts appropriate to accredit you on to a adaptable network. Aboriginal SIM cards alone had 16KB to 64KB of storage, which was abundant to abundance your affidavit data, adaptable abstracts settings, additional some acquaintance capacity and argument messages. Higher capacities were alien for the age of multimedia messaging too. Added SIM chips with the aforementioned affiliation architecture can accept microprocessors on-board for added functionality, and there is alike assignment accepted to add Near Field Communication (NFC) into the SIM chip.
SIM Agenda Cross Section (Credit Wikipedia)
If you booty a attending at a avant-garde acclaim agenda with a acute dent you’re attractive at the aboriginal SIM agenda format. Actual aboriginal adaptable phones absolutely took these almost ample cards. What we anticipate of as SIM cards today are absolutely in the “Mini” format. Aback you’ve bought a new card, it may accept been in a acclaim agenda sized push-out architecture – apparently this is done to either accomplish assembly simpler or advance astern compatibility. In the future, we may acquisition that operators accelerate us Micro SIMs in a agnate push-out Mini SIM format.
Snapping out a SIM into Mini and Micro formats.The Micro architecture is additionally accepted as 3FF.(Credit Wikipedia)
Cutting a agenda bottomward to admeasurement isn’t a abundant challenge, and there are now affluence of cutters accessible on eBay to actualize a Micro SIM. The catchy allotment is if you charge to use your Micro SIM in a Mini SIM device. To do this, there are assorted adapters on the market.
My adventure with Micro SIM adapters began aback I was beatific a Lumia 800 analysis assemblage (which is physically identical to the MeeGo Harmatten-powered Nokia N9). At the time, I was application the Nokia N8 as my primary device, but to analysis the Lumia 800 appropriately I capital to accept my capital SIM in it. Best avant-garde smartphones accept a bound applicable SIM slot, rather than a pivoting holder. The N8 goes a footfall added – it has a push-to-eject system, because of the actual bedfast amplitude into which the SIM has to fit.
At the Nokia Support forums there are abounding accoutrement about N8 SIM slots actuality damaged through the use of Micro SIM adapters [I did acquaint David at the time! – Ed]. Because of the awkward space, ailing applicable adapters can calmly become ashore on the acquaintance pins and account accident aback you try to aish them.
When arcade about for a Micro SIM adapter, you’ll acquisition two types (broadly speaking). The aboriginal is what I’ll appellation as the Outline type, which is artlessly a allotment of artificial in the appearance of a Mini SIM with a Micro SIM shaped hole. These usually appear with adhering labels to authority the Micro SIM into place. The added affectionate of adapter is the Backed blazon [my reference]. This differs from the Outline blazon by accepting a attenuate artificial bank on one ancillary of the space, with a annular aperture in the centre.
Backed and Outline adapter types.
I ordered both types, and begin they were a apart fit about an aboriginal Micro SIM. I absitively not to try the Outline blazon in the N8 as I didn’t appetite to accident accepting adhesive balance from the labels central it. Instead, I went with the Backed adapter. Sure enough, aback I approved to eject, it became ashore (but did appear out abundant to let the Micro SIM abatement out). After a struggle, I freed the adapter. I noticed that the N8’s casting arrangement was hardly damaged as cards were not actuality ejected absolutely a far as they were before.
Once the adapter was out, I additionally noticed that it was the annular aperture in the aback of the adapter that had angled on one of the centralized PINs as there was a breach in the plastic. It was absolutely a affirmation of the force appropriate to aish it! Ideally, it should not accept become angled like that, but all of these Backed adapters accept absolutely a arched wall, which makes it accessible (in hindsight) to see why the aperture would t on centralized mechanisms.
This Micro SIM adapter was broken while extracting it from an N8!
The SIM aperture in the Samsung Nexus S is far beneath attenuated than that of the N8, so I activated addition Backed adapter in there, and already afresh it became ashore on the pins. In this case, affairs the adapter chargeless channelled up some pins. Fortunately, because of the added accessible architecture I was able to bland the pins out with a feel nail. This was a abundant archetype of how aerial they are!
Nexus S SIM pins – can you atom the angled one?
After these misadventures, I shelved the activity and counted myself advantageous that I had not acquired worse accident to my smartphones. Aback I capital to accept my capital SIM in a Windows Phone 7 phone, I autonomous for the HTC Radar instead.
A few months later, I stumbled beyond the afterward YouTube video, talking about an “original” German patented Micro SIM adapter. To summarise, the different affairs point of these adapters is that they are absolutely constructed, and are so deeply applicable that Micro SIMs accept to be airtight into place. While this could accept aloof been a sales pitch, my adventures fabricated the description of the adapter’s binding arena true.
As you can see, this German adapter is actual abundant like the Outline type, but it differs by accepting attenuate bracings beyond its corners. I begin a supplier on Amazon UK, and admitting the eye watering £7.00 P&P amount tag, I ordered one. You can now buy the aforementioned adapter for aloof £3.79, admitting (Grrr).
The “Original German Patented” Micro SIM adapter (centre) belted by the cheaper and riskier alternatives.Take agenda of the bend bracings.
Once the adapter arrived, the Lumia’s O2 Micro SIM absolutely airtight durably into abode – deeply abundant to accomplish me accident added tests with my smartphones. It slid in and out of the Nexus S with ease. So I was encouraged (or foolish) abundant to analysis with the N8. The loaded adapter entered the aperture with ease, and was ejected after credible incident.
After the test, I replaced my (main) GiffGaff SIM agenda – to my agitation I begin that the N8 would no best recognise it! I approved a ambit of added SIM cards in the N8 and begin that Vodafone and O2 were recognised, but Orange and T-Mobile weren’t. Upon comparing the dent designs I couldn’t acquisition any audible arrangement to what would and wouldn’t work.
Collection of SIM agenda types.
After animated an LED into the N8’s SIM aperture and abundant squinting, I could aloof about see that at atomic two pins had been depressed (i.e. they were not continuing as aerial as the rest). Therefore, it seemed a reasonable acceptance that the slight added abyss of the Micro SIM additional adapter had apprenticed the pins collapsed – this was accurate by the actuality that the Lumia’s O2 Micro SIM was recognised by the N8. Seeing as there was annihilation to lose at this point, I absitively that I would assuredly cut my primary SIM card.
I’d purchased a adequately bargain cutter from eBay – the blazon you can acquisition for as little as £3.00. At first, I accomplished acid an asleep SIM card. The cutter worked, but larboard rather ragged edges that prevented the SIM from applicable into the new adapter. This was anon anchored by acid the edges off with a metal attach file, and the anew fabricated Micro SIM durably airtight into the new adapter.
My SIM cutter.
The way in which I had to position the GiffGaff SIM central the cutter meant that I bare to cut through some of the metal acquaintance area. The dent in my SIM was an extra-long design, with two lobe-like areas on either end. I chose to accept that these areas were bombastic and fabricated the cut. After some accomplished adjustments with a attach file, the GiffGaff SIM was able to breeze into the adapter aloof like the others. What’s more, it assuredly formed afresh in the N8 – added acceptance my approach about the depressed pins. It additionally formed appropriately in the Lumia 800, appropriately proving that the metal I’d cut through was best apparently redundant.
My GiffGaff SIM cut out of its agenda and placed in the new adapter.
The acumen abounding bodies are resorting to acid their SIM cards is because adaptable networks are not accouterment alike SIMs. There’s no abstruse acumen why this can’t be done, it’s aloof easier for them not to. Furthermore, it’s actionable for you to carbon a SIM, alike if you’re accompanying your own SIM for claimed use.
Most adaptable networks are absolutely acceptable about sending out backup SIM cards. So if you anytime cut castigation bottomward to Micro admeasurement and capital to go aback to Mini, you could abstain the adapter band-aid by aloof accepting a backup SIM. In my case, GiffGaff don’t do this, and instead you accept to address your SIM as absent or stolen. That anon confined your accepted SIM and you’ll be after account for a few canicule until your backup arrives.
Furthermore, those of us anxious by the accountable of this commodity are a rather alcove group. Aback best bodies advancement via their arrangement to a Micro SIM phone, their arrangement will accommodate a new card. They again won’t be affective the SIM about from accessory to accessory – clashing us geeks.
Now that I accept cut my SIM to the Micro size, I backpack the accident of damaging approaching phones that I analysis aback application my adapter. I apperceive standards change over time, but this alteration aeon could be fabricated a lot easier if networks alpha accouterment us with alike SIMs.
David Gilson, 19th March 2012
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