computer science

OPhone

OPhone is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand OPhone rather than just read about it. In short: OPhone (also known as OPhone OS, and sometimes called OMS, short for Open Mobile System) was a mobile operating system running on the Linux kernel and based on early versions of Android. The operating system was developed for China Mobile by software firm Borqs.

Key takeaways

OPhone belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect OPhone to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of OPhone from memory before moving on to harder problems.

Reference excerpt

OPhone (also known as OPhone OS, and sometimes called OMS, short for Open Mobile System) was a mobile operating system running on the Linux kernel and based on early versions of Android. The operating system was developed for China Mobile by software firm Borqs.

History OPhone was a smartphone software platform developed by China Mobile and based on the Linux kernel and Android operating system. OPhone was based on open source software and mobile internet technologies. Android was modified for local Chinese markets by China Mobile's OPhone Software Developers Network. The system provided a limited mobile internet experience using China Mobile's proprietary TD-SCDMA (3G) network and its GSM (2G) network.

Devices The OPhone operating system has only appeared on China Mobile phones, and a modified version of OMS appeared on other carriers as Android+, also developed and maintained by Borqs. The first publicly released device to feature the operating system was Lenovo O1, a collaboration between China Mobile and Lenovo.

Software development In 2009 Q1, the 1.0 version was released, corresponding to Android 1.0. In 2009 Q4, the 1.5 version was released, corresponding to Android 1.5 (Cupcake). In 2010 Q2, the 2.0 version was released, corresponding to Android 2.1 (Eclair). According to a Sina Tech release, this iteration would include support for the Windows Mobile API framework. By April 2010, around 600 apps were developed specifically for OPhones. In 2011 Q1, the 2.5 version was released, corresponding to Android 2.2 (Froyo). This was the last confirmed release of the operating system, which has not received updates since then.

References

External links China Mobile Home Page OPhone Software Developers Network: Ophone 1.5 SDK China Mobile Close To Launching Android Based 3G Phone Archived 2009-08-13 at the Wayback Machine Moco News.net (January 9, 2009) China Mobile Ophone hopes China Daily (September 1, 2009) China Mobile's OMS 2.0 Android OS supports Windows Mobile APIs. What's that? Mobile Tech World (February 2, 2010) China Mobile Backed OS Meant to Rival iPhone Falls Into Obscurity Archived 2014-01-02 at the Wayback Machine Cio (June 19, 2012)

Worked examples

Example 1 — a first encounter with OPhone

Start with the simplest possible case. Write down what OPhone claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to OPhone before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about OPhone ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of OPhone

In research: OPhone appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses OPhone in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: OPhone is common in secondary-school and first-year university syllabi. It links to neighbouring topics Android (operating system), Cloud clients, Embedded Linux, so understanding it makes those chapters shorter.
In everyday life: Look for OPhone outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study OPhone in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what OPhone means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain OPhone out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is OPhone in simple terms?

Why does OPhone matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study OPhone?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on OPhone.