Tag Archives: supply chain

What Happens to Our Old Phones?

It seems like every phone carrier offers new phones free or at reduced prices to their subscribers who trade in their old phone. Have you ever wondered what happens to old smartphones after we discard them? Do they have value? Who profits?

The path of the used phones is pretty hidden and it isn’t easy to follow the supply model once the older phones are sold. However (before you ask),  there is a substantial market and value in the older phones with a life (and profit) after the initial user. In fact, analysis firm IDC estimates that more than 282 million secondhand phones were sold in 2022 at an estimated $64.5 billion. That’s a lot of phones!  In addition, thanks to the trade-in offers from carriers, the market for secondhand phones is estimated to increase 10% annually through 2025.

What happens in the supply chain and distribution of these older products? It actually can be difficult to follow as many firms will not specify where the phones go. However, a recent video from the WSJ traces the path and gives insight into the process.

In short it works like this:

  • An old phone in gets traded in and the owner gets a credit
  • A reseller buys the trade-in phones from the carrier.
  • The reseller cleans the data, spruces up the phone, adds power cables, packages, and then sells the older phones to  wholesalers, who are often operating overseas.
  • The older phones can also sold the buyers on Amazon or to second-hand retailers such as Back in the Box.
  • The resellers sells the refurbished phone at approximately 20-30% below the price of the phone when it was new.

For consumers, the used phones offer a good discount. It also keeps valuable product from landfills.

Ready for a new phone?

Group Activities and Discussion Questions:

  1. Poll students: Who has traded in old smart phones for newer ones? How many have they traded in?
  2. Then count up the number of old phones sold in the classroom – it will likely be a surprisingly high count.
  3. Show the WSJ video about phone trade-ins: https://www.wsj.com/video/series/joanna-stern-personal-technology/inside-the-lucrativeand-secretivebusiness-of-iphone-trade-ins/4F0EA296-6546-4603-BF90-8561E08AAD4C
  4. Show Back in the Box website for selling older phones: https://backinthebox.com/
  5. Poll students again: Who has bought a refurbished older phone? What was their experience?
  6. Divide students into teams. Have each team research online sites for selling/buying older phones.
  7. Next, have teams determine the target market for these devices and create a promotional plan.

Source:  Stern, J. (15 March 2023). Inside the lucrative – and secretive – business of iPhone trade-ins. Wall Street Journal.

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The Bullwhip Effect Impact on Inventory

The bullwhip effect is in fine form these days. What is the bullwhip effect? In short, the bullwhip effect is when small changes in demand at the retail level can cause large changes in demand at the wholesale, distributor, and manufacturer levels. Think of how a bullwhip whistles through the air… The small motion of the whip base causes a big crack at the end of the whip, putting everything in disarray.

The result can either too much inventory (excess product) or too little inventory (unfulfilled need). Ideally, retailers want to have enough inventory to fill demand, but not too much waste storing extra inventory. It’s a fine balance. And of course, the balance was upset by the COVID pandemic when the supply chain was significantly disrupted globally. (Remember all those empty shelves for toilet paper?)

Retail spending for some categories trended upwards during the pandemic when (1) customers demanded more inventory, so (2) retailers ordered more product, followed by (3) wholesalers ordering more from (4) manufacturers, who in turn ordered more from (5) suppliers to meet demand. The cycle was exacerbated into a larger swing in orders. Excess inventory tends to be discounted so that the shelves clear. And then the cycle start again….

Bullwhips are tough to manage. It takes coordination throughout the supply chain to maintain balance. Technology can help, but it takes a continual evaluation of on-hand inventory, order timing, and pricing.

Go ahead, crack the whip and see what happens.

Group Activities and Discussion Questions:

  1. Poll students: What categories of items have been in short supply? What categories have more inventory than needed?
  2. Show video from WSJ: https://www.wsj.com/video/series/wsj-explains/why-everything-is-on-sale-the-bullwhip-effect/86086359-41FE-440C-9E66-A106E6D045A6
  3. How can the bullwhip effect be minimized?
  4. What should be done at each step of the supply chain?
  5. Is there a long-term effect?

Sources:  Wall Street Journal (5 October 2022). Why everything is on sale: The bullwhip effect. Video.

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Drone’s Place in the Supply Chain

How long have we been writing about drones? Probably around 10 years or so, and we are still asking “Where are they?” It’s been quite a while and drones from companies such as Google, Amazon, Zipline, UPS, and more have evolved in shape, size, and scope, but they are all still vying for attention and deliveries.

Well, perhaps delivery drones are finally ready to take-off (and land). A number of companies have been testing drones around the nation and the globe, and a handful are ready for commercial operations in the U.S. at last.

Among the contenders are company Zipline, which is now working on deliveries for Walmart and has delivered medical products for years in Ghana and Rwanda ; Flytrex, from Israel, is focused on local food delivery, and Wing (from Alphabet) has increased deliveries of medical supplies due to the pandemic. And of course, there is always Amazon waiting in the wings to launch its drone delivery services to millions of consumers!

Why the interest in drones to deliver products? Speedier deliveries for one, plus lower transportation emissions, less traffic, and that ever-elusive instant gratification! Many companies see it as solving the “last-mile” delivery problem. However, the use of drones still faces in-depth examination and regulation from the FAA. Because drones are an unknown  commodity and can operate autonomously, regulations are needed to prevent accidents or over-crowding in the skies over densely populated areas.

Drones themselves come in different shapes and sizes. Zipline has logged millions of miles of flights for commercial deliveries in Rwanda and Ghana. It is now teaming with Walmart and testing deliveries in Arkansas. Zipline drones are 11-feet wide, fixed-wing drones that launch from a steel rail and land using a hook to grab a wire.

Flytrex from Israel has been making deliveries for Walmart as well. It is also in partnership with Brinker International to deliver food to local restaurants. It’s drones look like the ones hobbyists use and can carry six pounds (or 33 chicken wings).

Amazon has lately been more secretive than when it first announced its intention to use drones a decade ago. However, the company plans to operate 145 drone stations and deliver 500 million packages within a year. It uses a more radical design with hexagonal wings and onboard systems for detecting obstacles. To deliver, it flies a few feet from the ground and drops packages.

Wing has yet another design. It’s drones are made from carbon fiber and injected-foam, weigh only 10 points, and lowers a hook to pick up and deliver packages.

What do you see in the sky?

Group Activities and Discussion Questions:

  1. Poll students about drones. What are the opportunities? The threats?
  2. What are their opinions about deliveries to their homes via drones?
  3. Bring up companies’ websites and show videos from each:
    1. Zipline: https://flyzipline.com/
    1. Amazon: https://www.amazon.com/Amazon-Prime-Air/b?ie=UTF8&node=8037720011
    1. Flytrex: https://www.flytrex.com/
    1. Wing: https://wing.com/
  4. What are advantages and disadvantages of each company?
  5. Divide students into teams. Have each team do an environmental analysis for drones: technology forces, social forces, economic forces, competition, and laws/regulations.
  6. How is each company poised to address the opportunities and threats?

Source:  Mims, C. (2 April 2022). Amazon, Alphabet, and others are quietly rolling out drone delivery across America. Wall Street Journal.

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