Saturday 19 September 2015

Can charging my phone over night destroy my battery?

According to Battery University, a website run by the company Cadex, charging your phone when its already fully charged keeps it in a high-stress, high-tension state, which wears down the chemistry within and does lasting damage.
Well ignore that.
 Image result for smart phone
In a brilliant and comprehensive Quora answer, tech author Jesse Hollington tells you everything you need to know about how your smartphone battery works: "Charging your iPhone overnight will not harm your battery in the slightest.
"Charging your iPhone from 90 per cent will not harm your battery either. You simply can't overcharge an iPhone, or any other modern electronic device, for that matter.
"Any device that uses a Lithium Ion or Lithium Polymer battery must incorporate a charging circuit that cuts off charging power when the battery reaches 100 per cent"
Basically the smartphone battery is as smart as the phone itself. Apple, Samsung and all the top tech companies - almost of whose products use lithium-based batteries - use this best practice.
And there's more: "Lithium Ion batteries are rated for a limited number of "charge cycles' (about 500 in the case of the iPhone), the term "charge cycle" refers to complete recharges, and partial recharges simply use up partial charge cycles.
"In other words, every time you charge your iPhone up from 90 per cent, you're using 1/10th, or 10 per cent, of a complete charge cycle.
"However, if you deliberately drain your battery to zero and then recharge it, instead of simply plugging it in when it needs to be charged, you're needlessly using up a complete charge cycle.
"Obviously if you're using your iPhone until the battery goes dead, that's fair, but there's no need to deliberately drain it before recharging it, and you'll actually shorten your battery life if you do so." No, charging your iPhone overnight does not destroy the batter!









Drones usage and the dangers


 Image result for An aerial view of HM Prison Bronzefield in Surrey

Speaking at a briefing during the Defence and Security Equipment International show in London, analysts from NOMS described drone use as an “emerging threat” which will increase as UAV technology becomes cheaper and easier to use.
NOMS said the number of attempts to infiltrate prisons using four or six-rotor drones widely available over the internet or from high street retailers remains small but is rising rapidly. In the five months to May this year, nine incidents were detected in England and Wales, compared to four for the entirety of 2014.

Drones operated by organised crime gangs pose an increasing threat to security in Britain’s prisons by offering a new route to smuggle drugs and potentially firearms into the hands of criminals, senior officials have admitted.
Small commercial drones are being used to lift packages containing illicit goods from mobile phones to synthetic drugs into jails, where they threaten security by increasing the availability of intoxicants which can provoke disorder in prisons.
Intelligence officers at the National Offender Management Service (NOMS) revealed they are also concerned at the potential to use remote-controlled Unmanned Aerial Vehicles (UAVs) to drop lethal weaponry into jails after a package the same size and weight of a gun was successfully dropped unnoticed into an unnamed maximum security prison during covert testing earlier this year.
Investigations suggest that several incidents where drones have been used to overfly prisons or deliver packages in the last 18 months were linked to serious crime groups. As a result, governors are now bracing themselves for security breaches by UAVs to become a more frequent problem across Britain’s 150 prisons.
Eve Richard, a senior analyst at the NOMS intelligence unit, said: “In a nutshell, our intelligence suggests that the use of UAVs to release items into our prisons is an emerging threat. It’s not a huge issue at the moment but there is the potential for it to increase and become more of an issue.”
Slides shown at the briefing underlined the nature of the threat, adding: “Intelligence suggests the use of UAVs to convey items into prisons will become more common as technology advances, costs reduce and confidence in their use and functionality grows.”
Ms Richard added: “All prisons are vulnerable - it doesn’t matter where they are, it doesn’t matter what type of prisoner they have, it doesn’t matter what kind of security category they are. Everywhere is vulnerable because it is air space and as long as you can get [a UAV] over the wall you are vulnerable.”

The NOMS analysts said drones were being used as an alternative to established and significantly less hi-tech ways of smuggling illegal items into prisons such as using visits or “throw overs”, where packages are simply thrown over prison walls into exercise yards.
A sophisticated UAV capable of being precisely manoeuvred using GPS technology and carrying a payload of up to a 1.5kg can be bought for less than £1,000 and flown with minimal training.
Recent incidents where drones were used to breach security include an attempt in March to fly a UAV into Bedford Prison with a package containing mobile phones and drugs. The aircraft became entangled in barbed wire after it was believed to have been destabilised by its cargo.
A drone was also spotted overflying HMP Long Lartin in Worcestershire at night on a possible reconnaissance or distraction mission while another was found two weeks ago after crashing into fencing at Liverpool Prison.
The items found on board the UAVs include smartphones and SIM cards - as well as accessories such as chargers and batteries - to enable career criminals to continue offending from inside prison, and consignments of synthetic psycho-active drugs such as “Spice”.
Managers are concerned that the ability of drones to deliver larger quantities of these drugs into prisons could have a knock-on effect on security by increasing the risk of violence against staff and between prisoners.
Lorna Shore, head of the NOMS Intelligence Analysis Unit, said: “On a day to day basis we are managing assaults against staff and prisoners and they are getting more serious and more difficult to manage. We don’t actually understand the reasons why but there might be some links with new psycho-active substances coming in.”
One of the most troubling threats posed by drones is their potential for infiltrating concealed weapons into even the most secure prisons.
As part of a three-month study of UAV risks, NOMS said it had carried out a test flight of a drone over a maximum security prison. The drone managed to fly over the prison and drop a package of similar size and weight to a handgun before withdrawing without being noticed by any of the staff on duty.
Ms Richard said: “We have had no intelligence that drones are being used for trafficking weapons; however, we can obviously all recognise that the potential is there.”
 NOMS said it was working with the National Crime Agency after investigations suggested that individuals with potential links to serious and organised crime networks were behind some of the drone flights.
Ms Shore said: “We need to understand further whether there is a co-ordinated effort behind this.”
Officials are now looking into acquiring technology which may counter the threat of drones, including products which can interfere with the radio signal controlling UAVs and bring them safely to ground.
In the meantime, the intelligence officials underlined that the prospect of a drone being used to airlift a prisoner out of jail remains highly unlikely. They pointed to one recent attempt by a drone enthusiast to lift himself using multiple UAVs harnessed to a metal frame, which resulted in the man being lifted off the ground for just two seconds.

Drone dangers

Passenger jets
A number of incidents in which drones have “buzzed” aircraft as they took off or landed at four UK airports, including Heathrow, resulted in a warning from the Civil Aviation Authority this summer that UAV pilots faced jail if their devices flew too close to jets.
The Emirates and other landmarks
Security guard Nigel Wilson was this week fined £1,800 and banned from owning drones after he flew his UAVs around a series of prominent buildings, including Arsenal’s Emirates football ground and the Houses of Parliament before posting the footage on YouTube. A judge told Wilson, 42, his actions were “the height of arrogance in terms of public safety”.
Shopping by air
Several companies, including Amazon (below), have expressed a headline-grabbing interest in using drones to deliver goods. Among the suggestions are the establishment of separate airspace for UAVs to avoid collisions as they zero in on customers’ smartphones or home addresses. Regulators are as yet unconvinced.
NOMS said it was working with the National Crime Agency after investigations suggested that individuals with potential links to serious and organised crime networks were behind some of the drone flights.
Ms Shore said: “We need to understand further whether there is a co-ordinated effort behind this.”
Officials are now looking into acquiring technology which may counter the threat of drones, including products which can interfere with the radio signal controlling UAVs and bring them safely to ground.
In the meantime, the intelligence officials underlined that the prospect of a drone being used to airlift a prisoner out of jail remains highly unlikely. They pointed to one recent attempt by a drone enthusiast to lift himself using multiple UAVs harnessed to a metal frame, which resulted in the man being lifted off the ground for just two seconds.
Image result for amazon's drones

Failure of iOS 9 software update

apple logo photo: iLove Apple iLoveApple.jpg 






 

Those rushing to download iOS 9 were hit by problems in the time after it launched – being greeted by a message that the "software update failed", rather than their shiny new operating system.
The download launched 10am pacific time, and is accessed through the iPhone or iPad's Settings app. But before it can be installed the device has to download it – and that seems to have been proving tricky.
New launches of iOS often run into problems because so many pile into Apple's servers at once. It's for that reason that Apple often waits to send out notifications that the update is live, so that the load on its servers can be staggered.
There doesn't at the moment seem to be any workaround to get the update to work over the air on the phone.
Some have suggested that downloading the update through iTunes – by plugging the phone in and selecting the update from there – gets around the issue. Plugging in the phone might trigger iTunes to automatically prompt you to upgrade, and if not it can be manually started from the "Summary" tab when looking at the phone in the app.
The error message simply sends users back to the Settings app. But trying to download again is likely to prompt the same problems, though some users have reported success after multiple attempts.
The problem seems not to be affecting all users.
It's expected that the software update failed messages will go away in time, as the load reduces, and so the best advice is to leave the phone and then try again later.

The iOS releases are often hit by network troubles since so many people try to download the files at once. Virgin Media UK said today that last year's iOS release increased traffic by 10 per cent.

Useful tip:
While waiting, users might want to check that they are fully-prepared for the update. That includes backing up the phone in case of further problems.
iOS 9 brings a range of small upgrades, many of them focused on fixing old problems and saving time while using the phone.
User may also try downloading updates from iTunes, that might help as some users confirmed they were able to download theirs through iTunes.