Why can't the "tough guys" from Northeast China use foldable phones?

It is said that in the Northeast, to visually identify who is a big shot on the street, you only need to look for three things:

A bird, two trees, and a foldable phone.

Why do big shots like foldable phones?

The reason is not complicated.

Firstly, they are expensive, which can highlight one's status while remaining low - key. After all, you can't see the person's face when answering the phone.

Secondly, they can display stock K - line charts and reports from subordinates in sufficient detail. Once unfolded, it gives the right vibe.

Thirdly, big shots have experienced the passage of time. As they get older, they may develop presbyopia, and a large screen is definitely more comfortable to look at.

As the saying goes: Being wealthy doesn't count as a win. Those who are capable use foldable phones.

However, recently, people have found that this method of identifying big shots has failed.

In the Northeast outdoors in winter, no matter how powerful you are, you can't use a foldable phone -

Because the temperature of minus 30 degrees Celsius will really make your foldable phone "too rigid to bend".

Foldable phones can't cross the Shanhaiguan Pass

Recently, the number of foldable phones sent for repair in local repair shops in Harbin has skyrocketed compared to usual.

A large number of tourists have posted their experiences in the Northeast on social media:

Just as they were about to take out their phones to take a picture of the rime, the moment they opened the foldable phone, there was a snap - the screen "leaked liquid".

At minus twenty degrees Celsius, opening and closing a foldable phone feels as crisp as breaking an ice lolly in summer.

Anyone who dares to play a game of Angry Birds on a foldable phone outdoors in the Northeast, I'll respect them as a real character.

Some netizens wouldn't let the poster off the hook:

Just fold it gently, and a single - screen becomes a double - screen. You've made a profit.

Some netizens kindly comforted, saying it's really nice. Although you didn't get a picture of the rime, you saw the aurora.

When the heart - broken netizens sent their foldable phones for repair, their hearts sank again:

The repair cost is 3000 yuan, which is enough to buy a new ordinary phone.

Fortunately, the people in the Northeast are still warm - hearted.

Some people have already suggested that Harbin's cultural and tourism department set up a free foldable phone repair service outside the Ice and Snow World to attract southern tourists.

Among the colorful broken foldable phones posted by netizens, it can be said that the cracks vary in countless ways. You can't find two phones with the same liquid leakage in the world.

But friends from the Northeast IP are not convinced at all:

"Why do the foldable phones of Northeast people work fine?"

They believe that the reason why southerners' foldable phones break in the Northeast is simply because they lack experience in dealing with the cold winter.

After all, the instruction manual says that the recommended operating temperature for foldable phones is 0 - 35 degrees Celsius.

Smart Northeast people simply don't turn on their phones when going outdoors below 0 degrees Celsius.

Yes, even though the temperature in the Northeast is below the official recommended temperature for four or five months, the Northeast people's love for foldable phones remains undoubted.

And the moment every Northeast person buys a foldable phone, the shopkeeper will repeatedly remind: Don't fold it back and forth outdoors in winter.

Keep it open once you open it, and keep it closed once you close it.

When you get back to a warm room, never let it experience sudden temperature changes like treating a crush. Otherwise, you'll have to pay 3000 yuan for repairs.

This is the winter survival wisdom passed down through generations in the Northeast.

But southerners have never seen such a situation. Even in Hebei in the north, people can only complain about being deceived by foldable phones.

After learning these precautions overnight, it's natural for on - looking netizens to say:

But objectively speaking, these troubles are caused by the characteristics of foldable phones.

You really can't blame the manufacturers.

The reason why foldable phones can be folded is that the traditional rigid screen is made into a flexible screen. And this flexible screen is composed of a variety of polymer materials.

The flexible screen can be roughly divided into three layers. One layer is flexible plastic, which replaces the traditional bottom hard glass substrate; one layer is self - luminous OLED; the last layer is a glass screen, which is shaved to one - third the thickness of a hair. At the same time, the layers are coated with liquid optical adhesive to bond them together.

Under the combined action of these soft and semi - liquid materials, the touch screen becomes bendable and foldable.

If you think the above explanation is still too complicated, you can simply imagine these materials as soft candies, jelly, and ice pops.

They are soft and malleable at room temperature, but once frozen at minus 30 degrees Celsius (the freezer compartment of a refrigerator is usually only minus 18 degrees Celsius), if you use brute force to bend them, it would be a physical miracle if they don't break.

Then why can't you expose a foldable phone to sudden temperature changes?

Imagine that when you take your phone from the - 30 - degree Celsius Ice and Snow World into a 25 - degree Celsius bathhouse, the 50 - degree Celsius temperature difference in a humid environment will cause it to fog up instantly.

The picture is generated by AI.

Just like when a person wearing glasses enters a room, everything in front of their eyes immediately turns white.

You can wipe the fog off your glasses, but what if the delicate components inside your phone fog up?

It's also simple. You'll have to pay 3000 yuan for repairs.

So, there's always more to learn about cold - resistance knowledge in the Northeast. You really can't learn it all.

The evolution history of Apple phones' cold - resistance

The problem of phones not being cold - resistant has troubled people in the Northeast for more than a decade.

If a foldable phone isn't cold - resistant, you just don't open or close it outdoors;

but if the battery isn't cold - resistant, a phone can't work without power.

For northerners, the most fatal pain point of using a phone in winter is the rapid power loss at low temperatures.

It's not just people in the Northeast. Northerners all over the world, including Nordic people, North Americans, and Russians, are united in their opposition to phones that aren't cold - resistant.

But why only more than a decade?

Because during the era when Nokia dominated, these weren't problems at all.

At that time, the performance of phones was so poor that the CPU consumed little power. One charge could last for a week. Moreover, the phone shells were made of pure plastic, which didn't conduct heat at all, equivalent to a natural insulation box. At worst, if it was too cold, you could just take out the battery and warm it up.

Things gradually started to change in 2010.

That year, iPhone released its fourth - generation phone, and Samsung, HTC, Motorola, and the still - lingering Symbian phones started to compete fiercely.