https://www.cnoems.com/china-smartphone-industry-guidelines-analysis/how-amoled-screen-smartphonesare-manufacturedby-chinese-oemmakers-2

1. How AMOLED screenSmartphones are manufactured By
Chinese OEM makers?
AMOLED screen Smartphones,Chinese OEM makers,original equipment
manufacturers,process of making a smartphone, amoled display phones , amoled
screen cellphones,mobile manufacturing in china,smartphone manufacturers in
china
Today, most of the world's smartphone manufacturing is done in China. We have
using mobile phones for a long time, and recently we started using AMOLED screen
Smartphones. But in general, have we considered how these phones are made? From
the conceptual concept to the final result of the product, the journey is a steep
mountain.
1. Making a prototype
The idea was conceived at the board meeting and then passed on to the R&D lab. So
they started from the prototype, actually a non-working prototype, in which aesthetics
is the first thing that must be considered. This model will be passed to the relevant
personnel so that they can make any changes as needed. After the model's appearance
is zeroed, the phone's internal work suite will work.
This control of the ride is then handed over to the electronic engineering team,
whereupon the processor and memory of the handset are determined here. Select the
matching display screen and the desired battery potential. The front and rear cameras
are also not to be missed. The device will then be equipped with the selected
components and checked for performance. After that, if the decision-making team is
reasonably satisfied with the work, the phone will be sent back to the authorities for
approval.
2. Software installation
The software team is now involved in invigorating the phone. It is basically an
operating system that is pr-determined to be loaded into the phone. Most importantly,
the hardware that is part of the electronics team is compatible with the smooth
operation of the operating system. Many experts here check in their own way whether
the system works as expected.
Then prepare the selected design, load hardware and software for mass production. At
this moment, it is often difficult to go back and change the approved work prototype.

2. 3. Test phase
Before the production began, the phone passed strict quality and other parameters
testing. They were tested in both hardware and software. Various tests, such as drop
test, bend test and water test, are performed to check their performance.
4.Mass Production
During mass production, AMOLED screen Smartphones are often coded to avoid
leaking information related to specifications and design. When the prototype is ready,
some components are built in-house and some specific components are outsourced.
Sometimes, the information released by the company's new model is leaked to the
public, which may be helpful or otherwise. Very helpful because it promotes the
"coming soon" phone. There is also a disadvantage because it gives critics an
opportunity to identify defects in the model that still need to be produced, thereby
lowering the rating. Quality begins with mass production of the model. This can be
the manufacturer's own factory, or it can be outsourced to other manufacturers, also
known as original equipment manufacturers (OEMs), to manufacture according to the
quality and specifications they require. AMOLED screen Smartphones are also
assembled in the process. You can take part in mobile phone repair training at the
Cnoems Institute to learn about the assembly and dis-assembly of elephones and other
AMOLED screen Smartphones.
5, packaging and transportation
When the phone passes all the tests, it will be sent to the package. The phone,
accessories and user manual are placed in the box for shipment. The final stage of the
process is delivery. Then send these packaged phones to retailers around the world
and pick up the phones from these retailers. This is the whole process of making a
smartphone. When the company decided to build a new model, they already had the
old model, so they didn't have to start from scratch. All they have to do is adjust the
old model by feedback from the user or experts in the field. All the shortcomings of
the previous model were solved, and with new innovations, the technology was
injected into the latter model.