science

Rugged smartphone

Rugged smartphone is a 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 Rugged smartphone rather than just read about it. In short: A rugged smartphone is a specific type of toughened smartphone which is designed to be completely sealed within a durable housing to protect it against damage from water, shock, dust, and vibration. Rugged smartphones are designed to survive extreme weather and temperatures, accidental damage, and rough handling; making them ideal for working outdoors, or in harsh environments, along with use during extreme sports…

Key takeaways

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

Reference excerpt

A rugged smartphone is a specific type of toughened smartphone which is designed to be completely sealed within a durable housing to protect it against damage from water, shock, dust, and vibration. Rugged smartphones are designed to survive extreme weather and temperatures, accidental damage, and rough handling; making them ideal for working outdoors, or in harsh environments, along with use during extreme sports, such as sailing, rock climbing, etc. Most rugged smartphones have been tested to tough IP68 standards. However, not all waterproof smartphones will be ruggedised. Some companies that manufacture heavy equipment, construction equipment or offroad vehicles such as Caterpillar, JCB, DeWalt, and Land Rover entered the market in hopes of leveraging the reputation in those reliability demanding industries.

Classification There are three general types of rugged phone:

Outdoor sports Military Stylish

Functional requirements The following IP code ratings for ingress protection (IP), as defined by the International Electrotechnical Commission (IEC) standard 60529 (equivalent to European standard EN 60529), are typically used for certifying various toughened and ruggedised smartphones.

Primary standard IP54 — Solid particle (dust) protection level 5 (protection from harmful dust) and liquid ingress (waterproof) protection level 4 (protection from splashing water from any direction).[1] IP56 — Solid particle (dust) protection level 5 (protection from harmful dust) and liquid ingress (waterproof) protection level 6 (protection from high pressure water jets).

Intermediate standard IP57 — Solid particle (dust) protection level 5 (protection from harmful dust) and liquid ingress (waterproof) protection level 7 (protection from full immersion at depths between 15 centimetres (5.9 inches) and 1 metre (3 feet 3 inches)).

Advanced (professional) standards IP67 — Solid particle (dust) protection level 6 (protection from all dust) and liquid ingress (waterproof) protection level 7 (protection from full immersion at depths between 15 centimetres (5.9 inches) and 1 metre (3 feet 3 inches)). IP68 — Solid particle (dust) protection level 6 (protection from all dust) and liquid ingress (waterproof) protection level 8 (protection from full immersion at depths determined by the manufacturer). IP69K — In the IEC 60529 rating system for ingress protection (IP), IP6* refers to the product's ability to resist ingress of dust. The IP*9K refers to the product's ability to resist ingress of high temperature (steam) / high pressure water. If the device passes all these tests, then it can be considered as IP69K rated smartphone, and can be used in harsh environments with high pressure / steam cleaning.

Testing procedure per ISO 20653 A spray nozzle that is fed with 80 degrees Celsius (176 degrees Fahrenheit) water at 80–100 bars (1,160–1,450 pounds per square inch) and a flow rate of 14–16 litres per minute (3.1–3.5 imperial gallons per minute; 3.7–4.2 US gallons per minute). The nozzle is held 10–15 centimetres (3.9–5.9 inches) from the tested device at angles of 0°, 30°, 60°, and 90°, for 30 seconds each. The test device places on a turntable that rotates once every 12 seconds.

MIL-STD-810G MIL-STD-810G is a U.S. military standard that stipulates a level of durability for an item of equipment. Specifically, it means the equipment has been subjected to a series of twenty-nine (29) tests, including shock tests, vibration tests, and more. This means it should be field ready, or even 'combat ready' in principle. A lot of technology sold to the U.S. military must be MIL-STD-810G compliant.

List of rugged smartphones

Rugged dumb phones Cat Phone B25, S22 Flip, Evolveo StrongPhone Nokia Nokia 5210, Nokia 3720 classic, Nokia 800 Tough Aspera R25, R25t, R32, R30, R40

See also Emerging technologies Telephones portal Rugged computer

References

Illustrations

Worked examples

Example 1 — a first encounter with Rugged smartphone

Start with the simplest possible case. Write down what Rugged smartphone claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 Rugged smartphone 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 Rugged smartphone 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 Rugged smartphone

In research: Rugged smartphone appears in 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 Rugged smartphone 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: Rugged smartphone is common in secondary-school and first-year university syllabi. It links to neighbouring topics Consumer electronics, Information appliances, Smartphones, so understanding it makes those chapters shorter.
In everyday life: Look for Rugged smartphone 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 Rugged smartphone in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rugged smartphone 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 Rugged smartphone out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rugged smartphone in simple terms?

Why does Rugged smartphone matter?

Because it connects several 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 Rugged smartphone?

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 Rugged smartphone.