[XDA Assist] cidoncha:
Hello guys, This is my first post and i have a problem a few days my phone crash i dont made any app, only is the log of the system android 4.2.1 and the phone crash sometimes and i will reboot or remove battery

My knowledge is not high and i don´t know if I remove lines i can be removing important information. I don´t know were is the problem

Phone info:

Model: Jiayu G4A>

Version: Android 4.2.1

Kernel: 3.4.5

Compilation: G4A 20131209-000003

This is a log of the system.

01-18 20:00:29.228 D/libc-netbsd(3506)getaddrinfo: ip4.telize.com NO result from proxy
01-18 20:00:29.228 D/libc-netbsd(3506)res_queryN name = ip4.telize.com, class = 1, type = 1
01-18 20:00:29.240 D/libc-netbsd(3506)getaddrinfo: ip6.telize.com get result from proxy >>
01-18 20:00:29.270 D/libc-netbsd(3506)res_queryN name = ip4.telize.com., class = 1, type = 1
01-18 20:00:29.282 W/dalvikvm(3506)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-18 20:00:29.282 W/dalvikvm(3506)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-18 20:00:29.282 W/dalvikvm(3506)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-18 20:00:29.283 E/dalvikvm(3506)Could not find class 'android.support.v4.app.FragmentActivity', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.a
01-18 20:00:29.283 W/dalvikvm(3506)VFY: unable to resolve instanceof 195 (Landroid/support/v4/app/FragmentActivity;) in Lcom/google/android/gms/common/GooglePlayServicesUtil;
01-18 20:00:29.283 E/dalvikvm(3506)Could not find class 'android.support.v4.app.FragmentActivity', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.a
01-18 20:00:29.283 W/dalvikvm(3506)VFY: unable to resolve check-cast 195 (Landroid/support/v4/app/FragmentActivity;) in Lcom/google/android/gms/common/GooglePlayServicesUtil;
01-18 20:00:29.284 W/dalvikvm(3506)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-18 20:00:29.284 W/dalvikvm(3506)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-18 20:00:29.285 W/dalvikvm(3506)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-18 20:00:29.301 W/dalvikvm(3506)VFY: unable to resolve static method 1032: Landroid/security/NetworkSecurityPolicy;.getInstance ()Landroid/security/NetworkSecurityPolicy;
01-18 20:00:29.307 E/dalvikvm(3506)Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.nb.a
01-18 20:00:29.307 W/dalvikvm(3506)VFY: unable to resolve check-cast 27 (Landroid/app/AppOpsManager;) in Lcom/google/android/gms/common/nb;
01-18 20:00:29.307 W/dalvikvm(3506)VFY: unable to resolve virtual method 424: Landroid/content/pm/PackageManager;.getPackageInstaller ()Landroid/content/pm/PackageInstaller;
01-18 20:00:29.310 W/dalvikvm(3506)VFY: unable to resolve virtual method 1000: Landroid/os/UserManager;.getApplicationRestrictions (Ljava/lang/String;)Landroid/os/Bundle;
01-18 20:00:31.359 W/dalvikvm(3506)VFY: unable to resolve virtual method 2745: Landroid/webkit/WebSettings;.setMixedContentMode (I)V
01-18 20:00:31.363 W/dalvikvm(3506)VFY: unable to resolve virtual method 2755: Landroid/webkit/WebView;.evaluateJavascript (Ljava/lang/String;Landroid/webkit/ValueCallback;)V
01-18 20:00:31.364 W/dalvikvm(3506)VFY: unable to resolve virtual method 8548: Lcom/google/android/gms/ads/internal/u/k;.isAttachedToWindow ()Z

Other log

01-19 16:36:53.362 D/libc-netbsd(5395)getaddrinfo: ip6.telize.com get result from proxy >>
01-19 16:36:53.386 W/dalvikvm(5395)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-19 16:36:53.386 W/dalvikvm(5395)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-19 16:36:53.386 W/dalvikvm(5395)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-19 16:36:53.386 E/dalvikvm(5395)Could not find class 'android.support.v4.app.FragmentActivity', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.a
01-19 16:36:53.388 W/dalvikvm(5395)VFY: unable to resolve instanceof 195 (Landroid/support/v4/app/FragmentActivity;) in Lcom/google/android/gms/common/GooglePlayServicesUtil;
01-19 16:36:53.388 E/dalvikvm(5395)Could not find class 'android.support.v4.app.FragmentActivity', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.a
01-19 16:36:53.388 W/dalvikvm(5395)VFY: unable to resolve check-cast 195 (Landroid/support/v4/app/FragmentActivity;) in Lcom/google/android/gms/common/GooglePlayServicesUtil;
01-19 16:36:53.390 W/dalvikvm(5395)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-19 16:36:53.390 W/dalvikvm(5395)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-19 16:36:53.391 W/dalvikvm(5395)VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
01-19 16:36:53.395 D/libc-netbsd(5395)getaddrinfo: ip4.telize.com NO result from proxy
01-19 16:36:53.395 D/libc-netbsd(5395)res_queryN name = ip4.telize.com, class = 1, type = 1
01-19 16:36:53.406 D/libc-netbsd(5395)res_queryN name = ip4.telize.com., class = 1, type = 1
01-19 16:36:53.413 W/dalvikvm(5395)VFY: unable to resolve static method 1032: Landroid/security/NetworkSecurityPolicy;.getInstance ()Landroid/security/NetworkSecurityPolicy;
01-19 16:36:53.420 E/dalvikvm(5395)Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.nb.a
01-19 16:36:53.420 W/dalvikvm(5395)VFY: unable to resolve check-cast 27 (Landroid/app/AppOpsManager;) in Lcom/google/android/gms/common/nb;
01-19 16:36:53.420 W/dalvikvm(5395)VFY: unable to resolve virtual method 424: Landroid/content/pm/PackageManager;.getPackageInstaller ()Landroid/content/pm/PackageInstaller;
01-19 16:36:53.423 D/libc-netbsd(5395)res_queryN name = ip4.telize.com. succeed
01-19 16:36:53.424 W/dalvikvm(5395)VFY: unable to resolve virtual method 1000: Landroid/os/UserManager;.getApplicationRestrictions (Ljava/lang/String;)Landroid/os/Bundle;
01-19 16:36:55.248 W/dalvikvm(5395)VFY: unable to resolve virtual method 2745: Landroid/webkit/WebSettings;.setMixedContentMode (I)V
01-19 16:36:55.251 W/dalvikvm(5395)VFY: unable to resolve virtual method 2755: Landroid/webkit/WebView;.evaluateJavascript (Ljava/lang/String;Landroid/webkit/ValueCallback;)V
01-19 16:36:55.252 W/dalvikvm(5395)VFY: unable to resolve virtual method 8548: Lcom/google/android/gms/ads/internal/u/k;.isAttachedToWindow ()Z
01-19 16:36:55.686 D/libc-netbsd(5395)getaddrinfo: googleads.g.doubleclick.net get result from proxy >>
01-19 16:36:55.691 D/libc-netbsd(5395)getaddrinfo: tpc.googlesyndication.com get result from proxy >>
01-19 16:36:57.002 D/libc-netbsd(5395)getaddrinfo: pagead2.googlesyndication.com get result from proxy >>

I think the problem is on W/dalvikm or E/dalvikm.

The question is as i can fix it..

Thank you so much.