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Construction sites are dangerous places for smartphones, unless you pick the best and most durable model.  Based on the number of smartphones you see with spiderweb-cracked screens, you might think every model out there was an expensive and fragile waste of money, particularly if you're active on a jobsite. Drops and bumps, water sprays, dust, extreme temperatures, and vibrations are all threats to an otherwise essential technology tool.   Luckily, not all smartphones are delicate flowers. There are strong options available for construction contractors, engineers and skilled tradespeople who cannot afford to compromise on ruggedness. Whether you need something weatherproof, impact-resistant, optimized for multimedia, ready for collaborative projects or all of the above, you just need to know where to look.     What makes a smartphone rugged?   To call a phone rugged, not to mention waterproof or water-resistant, it should have a variety of certifications to its name. That means a third party has conducted tests to prove whether the device can withstand some pretty serious abuse. There are generally two types of these certifications: IP and MIL-STD.   The IP (Ingress Protection) rating on a smartphone is published by the International Electrotechnical Commission, which determines if a device performs after exposure to dirt, dust and water. The ratings for dirt range from 1 to 6, and 1 to 8 for water. The max rating for particulates would be IP6, and a max rating for liquid would be IP8. That would mean an IP68 phone is completely resistant to dirt damage and can be left underwater indefinitely, at a depth determined by the manufacturer.   The MIL-STD (Military Standard) specs are set by various arms of the U.S. Military and Department of Defense. The numbers associated with MIL-STD indicate far more than just protection from water and dust. For instance, MIL-STD-810Gs certifies that something can withstand nuclear radiation, drops onto concrete, and exposure to rapid freezing or heat. These certifications can be much more nuanced, but most commonly in rugged smartphones, you'll note they are listed under an umbrella designation of MIL-STD-810G, which has a number of subcategories.   It is worth noting that a smartphone lacking one of these certifications may still be able to take a beating. For instance, companies such as Panasonic and Xplore are more focused on making sure their devices can be dropped than they are on them being able to handle really cold weather.     Best rugged smartphones   The ioutdoor x (about 229$ Aliexpress https://bit.ly/2JkqOaq) is IP68 certified to offer protection against dust, shock from a 6-foot fall onto concrete, vibration, temperature extremes, blowing rain, low pressure, solar radiation, salt fog, humidity and water immersion. The Android phone sports a big storage 6GB+128 GB, and 18:9 full screen, NFC, which is is a state-of-the-art smartphone with fashion design suit for daily use.     The Sonim XP7 ($579) is another smartphone to consider for jobsites. It's more 'tank' than entertainment center, and it comes with a three-year, no-questions-asked warranty. Its Gorilla Glass 2 screen doesn't match the Brigadier's for imperviousness, but it runs Android and is IP69 rated.   The Crosscall Trekker-X3 was built to live outside. It is IP67 rated, meaning it can survive a full range of outdoor conditions. It does far more than deliver your email and apps, too. It comes with a built-in thermometer, hygrometer, barometer and magnetometer. The box it comes in doubles as a wireless charger.    

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Samsung Galaxy Note 9 Midnight Black UK model Boxed Mint condition unused accessories, selling as upgraded to the 512gb model. Price £560 delivered RMSD. UK Bank Transfer or PayPal friends&family.

The ioutdoor have made an appearance on the official facebook of their new model(iputdoor polar3), they showed the back cover appearance and design and give some interactive activities. “Tough and hard” maybe the first image from the picture, of course, the official have confirmed that it also follow the company route with professional IP68 certification.  More surprising, some news from China technology spread that, the coming model of ioutdoor will adopt 5G internet. As we all know from the second half of 2018, 5G internet is the most popular topic in the smartphone filed and will be the most important competition features in 2019. ioutdoor as the innovative rugged smartphone manufacturer, so it is not strange here if the manufacturer update and release the latest 5G internet to get more market share.  Also from the picture, it seems that this model more tough and rugged than the ioutdoor x from the appearance, and it should be pack dual cameras and rear finger sensor, which vertically arrangement. From some ambiguous message released in the official facebook, we can give a dare guess: this model will have good performance in battery, photography and storage.  The appearance have show to us, but the detail specification didn’t reveal now, please pay more attention the the official site www.ioutdoor.cc  and facebook page to get the latest information and update.