Tuesday, March 25, 2008

Informal Repair Cultures

Cultures of Repair, Innovation. Presentation to the University of Cape Town & Mareka Institute, South Africa, 2006 In an effort to understand the total user experience I've taken time out during recent field studies in emerging markets to explore local repair cultures. The journey has taken me to cities such as Chengdu, Delhi, Ulan Bataar, Ho Chi Minh and Lhasa with recent brief stopovers in Kampala and Soweto. They all contain clusters of shops and market stalls selling a mixture of used and new mobile phones, and whilst (in this instance) size does not necessarily matter, they often operate on a scale not seen in cities such as London or Tokyo. The mobile phone market around Chengdu's Tai Shen Lan Lu Market for example stretches across number of streets and shopping arcades and includes 100's of small shops and stalls. If you want a snapshot of urban mobile phone consumers in emerging markets this is a good place to start.

All you need to get started. Delhi, 2005

What sets these locations apart from cities in more 'emerged' markets? Aside from the scale of what's on sale there is a thriving market for device repair services ranging from swapping out components to re-soldering circuit boards to reflashing phones in a language of your choice , naturally. Repairs are often carried out with little more than a screwdriver, a toothbrush (for cleaning contact points) the right knowledge and a flat surface to work on. Repair manuals (which appear to be reverse engineered) are available, written in Hindi, English and Chinese and can even be subscribed to, but there is little evidence of them being actively used. Instead many of the repairers rely on informal social networks to share knowledge on common faults, and repair techniques. It's often easier to peer over the shoulder of a neighbour than open the manual itself. Delhi has the distinction of also offering a wide variety of mobile phone repair courses at training institutes such as Britco and Bridco turning out a steady flow of mobile phone repair engineers. To round off the ecosystem wholesalers' offer all the tools required to set up and run a repair business from individual components and circuit board schematics to screwdrivers and software installers.

Wholesaler in Tai Shen Lan Lu Mobile Phone Market,  Chengdu, 2006

How are mobile phone repair cultures different from the everyday repair shops for other mainstream electronics filled with televisions and video recorders? For a start consider the volumes of mobile phones in the marketplace compared to other electronics. Network effects soon kick in - it's easier to find a dead RAZR to cannabalise for spares than spares for a Sony DVD drive drive quite simply because there's more of them about. The physical size of the products to be repaired is also an factor - consider the space required to store and repair 200 mobile phones vs CRT televisions. As objects that many consider essential tools for everyday life mobile phones are carried, dropped, sat on, run over, submerged in a wide variety of situations leading to use cases outside the parameters of most phones. Finally, for many emerging market consumers the phone is considered an essential tool for conducting a successful business whether it's a boda-boda driver in Kampala or a midwife in Xiamen. If a person has the choice between repairing a television or a (shared) mobile phone which do you think he or she would choose first?

Television repair. Lhasa, 2005

Each of the cities mentioned above offers more formal repair services, usually officially through customer care service centers, but the scale and sophistication of what is on offer informally is way beyond what many readers of Future Perfect will be familiar. And yes, many of the places mentioned already have networks to (from my observations) efficiently recycle, repair and re-use a wide variety objects including electronics . But in the spirit of the Future Perfect let's start with a very basic question - why do these informal repair cultures exist at all? What is so different between London and Lhasa or Helsinki and Ho Chi Minh?

Circuit board repair is also possible. Ji Lin, 2006

The informal repair services that are offered are quite simply driven by necessity - highly price sensitive customers cannot afford to go through more expensive official customer care centers and even if they could their phones are unlikely to be covered by warrantee - having been bought through grey market channels, been sent as gifts from friends and relatives abroad, or were locally bought used, second or third+ ownership. In many cases these users cannot afford to be without their mobile phone, not in the social sense of being out of touch (which is valid enough), but in many instances because their livelihoods depend on it. On the supply side there is a ready pool of sufficiently skilled labour, ready access to tools, components and above all knowledge.

It's worth acknowledging that grey and black goods and services are also part of the mobile phone market ecosystem - whether it's passing faked goods off as originals or offering pirated software. Some markets also sell a wide variety of phones that copy the industrial designs of other products, examples are shown here and and example of how it can unfold here (these two links are unrelated). These are however, only a part of the whole market ecosystem and from my understanding are small in scale within the context of the physical markets' themselves, compared to the repair services on offer. And before you ask - no, I'm not arguing that piracy is a minor issue.

Used mobile phones with warrantee. Ulan Bataar, 2006

For consumers the informal repair culture is largely convenient, efficient, fast and cheap, reducing the total cost of ownership for people for whom a small drop in price may make the difference between having or not having a phone. The culture of repair also increases the lifetime of products lowering their environmental impact (though this could be offset by other factors such as inefficiency of using old batteries).

What can we learn from informal repair cultures?

Aside from the benefits, what are the risks for consumers and for companies whose products are repaired, refurbished and resold? Given the benefit to (bottom of the pyramid) consumers are there elements of the repair ecosystem that can be exported to other cultures? Can the same skills be applied to other parts of the value chain? And, turning to my original interest in this topic and the work we do in the Mobile HCI Group, given the range of resources and skills available what would it take to turn cultures of repair into cultures of innovation?

Nokia N80 disassembly


Tools required: T6 screwdriver & pair of non magnetic tweezers or a plastic shim such as a guitar plectrum
  • Remove the battery & sim card. Undo the torx screws shown in the image below

  • Using the handle end of the tweezers, insert them into the grooves, shown by the arrows below.

  • Lever the tweezers out to undo the tabs at the top and middle and your phone will be like below. Slide the top cover down towards the keypad to remove it.

  • The top cover and keypad have now been removed (below).

  • Next remove the soft key board by removing the screws indicated below.

  • Now remove the LCD screen by disconnecting the ribbon cable, which the arrow shows below. Gently lift this part until it unplugs from the main board

  • Using the tweezers, pop out the screen by levering it with the tweezers in the area indicated by the arrows in the picture below.

  • Your phone should now be as pictured below.

  • Replace the old LCD with new Reverse the procedure for disassembly and it's finished.

Thursday, March 20, 2008

Sony Ericsson Lowers Earnings Expectations Due to Slowed Sales

Sony Ericsson has announced that it is lowering its Q1 sales and profits expectations, thanks to slow growth in the mid-level and high-end handset market. The lower profits are also partially blamed on a shortage of certain components for mid-range handsets.

Sony Ericsson is expected to publish its Q1 2008 reports on April 23rd. Company President Dick Komiyama reasons that the handset manufacturer has recently been focusing on expanding its portfolio in new markets and will likely begin seeing positive results from that in the second half of 2008.

Wednesday, March 19, 2008

Repair Techniques - Nokia 2650 & Variants

When dismantling any phone, great care should be taken to ensure that no damage is caused to any of the parts. Rough handling may result in severe damage of many parts, and if proper anti-static procedures are not followed, electrostatic damage may result in any electronic component.

Before commencing, it is recommended that the correct tools are purchased for the job in hand - at the very least, you will require a Torx T6 screwdriver.

Step 1. Remove the battery cover.

Step 2. Protect the screen with a film or similar.

Step 3. The back plate is attached to the hinge with adhesive tape. Note:- To avoid damaging the plastic lugs, only remove the back plate by lifting to the right of the Nokia logo.

Step 4. If you need to replace the adhesive tape, now would be a good time to get it done.

Step 5. The face assembly is held in place to the lower part of the chassis with two plastic lugs. Carefully release these as shown below

Step 6. With the lugs released, slide the face assembly in the direction shown to release it from the lower part of the chassis.

Step 7. Fold the face assembly as shown below.

Step 8. You should now be able to remove the face assembly by simply pulling it away from the top part of the chassis.

Step 9. Protect the inner face of the screen.

Step 10. Remove the four Torx T6 screws in the order shown below.

Step 11. Remove the next four Torx T6 screws in the order shown below.

Step 12. You should now be able to simply lift away the b-cover from the lower section of the phone.

Step 13. And repeat with the upper section.

Step 14. At this point, take careful notice of the placement of the coaxial cable in the lower chassis.

Step 15. Also take notice of cable placement in the hinge area.

Step 16. And, of course, the upper section of the phone.

Step 17. The picture below shows coaxial cable placement in the aerial chamber.

Step 18. Lift the coaxial cable off the main circuit board using tweezers.

Step 19. Take careful note of the position of the coaxial cable for reassembly.

Step 20. You can now carefully remove the cable. Note that when you come to reassembly, you should start at the aerial end of the phone stretching the cable towards the hinge, and likewise on the lower section of the phone.

Step 21. Remove the two Torx T5 screws from the lower chassis.

Step 22. Fold the phone in half as shown below.

Step 23. Carefully release the screen connector using a large bladed screwdriver.

Step 24. With the screen connector released, you can now remove it completely from it's connector.

Step 25. You can now separate the two halves of the phone.

Step 26. Open the two hooks before attempting to remove the hinge assembly.

Step 27. Take great care not to damage the screen connector cable when removing the hinge assembly.

Step 28. Remove the two snaps before attempting to remove the aerial assembly.

Step 29. You should now be able to remove the aerial assembly.

Step 30. Release the four clips shown below.

Step 31. You can now lift the screen surround away.

Step 32. Remove the vibra motor using tweezers or similar.

Step 33. Carefully release the LCD screen connector.

Step 34. Use a thin plastic shim to carefully release the screen.

Step 35. Release the four clips of the key dome shield.

Step 36. With the clips released, you can lift the key dome shield away.

Step 37. The main circuit board can now be lifted away.

Step 38. The microphone and main connector block should simply fall out of the chassis.

Step 39. Reassembly is a simple reversal of the above steps taking extra time to ensure that everything works as it should, and that you have caused no damage whilst inside the handset.