If using more than one cell phone is it effects or not Could Your Cell Phone Be Bad for Your Health?

 

Smartphones Have Germs

You carry your smartphone with you wherever you go. 
You have it on you at school, work, and while out shopping and 
running errands6. 
Some people even carry their smartphones into the bathroom
 (not recommended)! Smartphones harbor viruses and bacteria like E. 
coli that can make you sick. Use alcohol-based 
wipes that are safe to use on electronics and wipe down your
 smartphone at least once daily to remove dirt, dust, and germs.

Watch Your Neck

Looking down at your smartphone while texting and browsing strains 
neck muscles and may lead to knots or spasms. It may even lead to
 nerve pain that radiates to the back, shoulders, or down the arms. 
Take regular breaks at least every 20 minutes when you are texting or 
browsing on your smartphone. Maintain good posture and do not hunch forward. 
Hold your phone higher when you are using it. Proper smartphone ergonomics
 helps prevent injuries associated with smartphone use, a common public health consideration. Do regular exercise that strengthens and
 stretches muscles like yoga and Pilates.

Hold the Phone Properly

position that involves bending the neck in an awkward position for a 
prolonged period of time may result in neck pain, 
including holding your smartphone between your shoulder and ear.
 If you are in this position for too long, neck pain may result.
 If you must be in this position while talking on the phone, 
take frequent breaks and move your neck to avoid getting stiff.
 If your neck cramps up, rest and put a heating pad on the area to
 combat tight muscles. Over-the-counter pain relievers can 
decrease pain and stiffness, too. If the pain lasts for more than a few days,
 talk to your doctor.

Texting While Driving

It is very dangerous to text while driving.

 Texting while driving distracts you from what's happening on the road. 

It just takes a few seconds of inattention to lead to an accident. 

In 2019, nearly 2800 people were killed and approximately

 300,000 people were injured in car accidents

 involving cell phone distracted drivers.

 Some states have laws that ban cell phone use while driving.

 Other states require hands-free use of cell phones while driving.

Talking While Driving

It is a misconception that it is safe to talk on a smartphone while driving.

 It is not safe. Talking on the phone while driving leads to

 something called cognitive distraction.

 This type of distraction takes your mind off the road,

 so even though you may be using a hands-free device that

 allows for voice-activated dialing and operation,

 your mind is not on the road. Your eyes and brain perceive

 what's around you when you're talking on a cell phone while driving, 

but you don't really see your environment.

 Talking on a smartphone while driving greatly increases the risk of car accidents. 

If you must make or take a phone call while driving, pull over on the side of the road.

Beware of Blue Light

Shorter wavelength blue light that is emitted by smartphones, 

lights, and computer, tablet, and TV screens causes damaging health effects

Exposure to this wavelength of light disrupts circadian rhythms

Exposure to blue light after the sun goes down interferes with sleep. 

Blue light may contribute to heart disease, obesity, diabetes,

 and other health conditions. Minimize your exposure to unnecessary

 light, including smartphone screens, after dark. 

You will also sleep better if you get a lot of exposure to natural light during the day.

Do Smartphones Cause Cancer?

Some people worry that cell phone use is associated with brain tumors, 

brain cancers, and other types of tumors and cancer. 

Evidence from epidemiological studies do not show a link between

 smartphone use and these conditions. If you have concerns about the

 ionizing radiation emitted by cell phones, limit the amount of time you use them.

 If you would like to minimize your exposure to cell phone radiation,

 talk on the phone in speaker mode or use a headset.

The Interphone study was a case-control study examining the

 effects mobile phone use on brain tumor risk. 

The study found that there was no increase in the risk of two types of tumors, 

glioma and meningioma, observed with the use of cell phones. 

The study suggested there was an increased risk of glioma

 with the highest exposure levels, but certain biases and error 

with the study mean that a causal interpretation could not be made. 

The potential health effects of heavy, long-term mobile phone use 

need to be investigated further.

If you are still worried about radiation emitted from smartphones,

 use a corded headset or earpiece during phone use.

 Choose a cellular device that has a low SAR rating. 

SAR stands for specific absorption rate. 

It is a measure of the rate that the body absorbs

 radiation during cellphone use. The amount of radiation the

 body absorbs from cell phones is dependent on more than just the SAR rating. 

Cordless phones (wireless phones, including base stations),

 microwave ovens, and cell towers are other sources of

 electromagnetic radiation in our environment.